Pulmonary veins deliver blood to the left side of the heart.
The veins that carry oxygenated blood from the lungs to the heart are known as the pulmonary veins. The four primary pulmonary veins—two from each lung—that empty into the left atrium of the heart are the largest pulmonary veins.
The pulmonary circulation includes the pulmonary veins. A superior and an inferior main vein emerge from each hilum, making a total of four main pulmonary veins, two from each lung. Three or four feeder veins in each lung supply blood to the main pulmonary veins, which then drain into the left atrium. The bronchial tree is not followed by the periphery feeding veins. Between the pulmonary segments where they drain the blood, they move.
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Pulmonary veins deliver blood to the left side of the heart. Large veins known as pulmonary veins carry oxygen-rich blood from your lungs to your left atrium.
The blood vessels that carry freshly oxygenated blood from the lungs to the left atria of the heart are referred to as the lung veins or pulmonary veins. Blood flows from your left atrium to your left ventricle when your mitral valve opens. When the left ventricle is full, it contracts, causing the mitral valve to close and the aortic valve to open. Through your aortic valve, your heart sends blood to your aorta, where it flows to the rest of your body.
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Scientists have successfully cloned sheep and cattle for several years. A farmer is
considering the advantages and disadvantages of having a flock of sheep cloned
from a single individual. Din the issues the farmer should take into account
before making a decision. Your response should include:
• how a cloned flock would be different from a noncloned flock
• one advantage of having a cloned flock
• one disadvantage of having a cloned flock
• one reason that the former could not mate these cloned sheep with each
other to increase the size of his flock
one reason that the offspring resulting from breeding these sheep with an
unrelated sheep would not all be the same
One advantage of having a cloned flock of sheep is that there would be no characteristic difference, while a disadvantage includes that there would be no desirable variations.
Advantages of having a cloned flock includes that there would be no difference. Unlike non-cloned herds, which have a high genetic diversity, all would be identical genetic copies. All sheep would be identical. All sheep would have one or more desired characteristics (that the original individual possessed).
Disadvanatges include because they are all the same, a disease to which they have no resistance could wipe out the entire flock. The sheep could have a genetic defect, shorter life expectancy. They would all be the same sex and thus could not mate. One reason why the offspring of breeding these sheep with an unrelated sheep would not all be the same include that both parents pass on genes to their children. Hence, various gene combinations will result.
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A cloned flock would be different from a noncloned flock in that all the sheep in the cloned flock would be genetically identical. This is due to the fact that cloning involves taking the genetic material from a single individual and creating copies of it.
One advantage of having a cloned flock would be that the farmer would be able to predict with greater accuracy the characteristics of the flock, such as wool production and feed efficiency.
One disadvantage of having a cloned flock is that the flock could be more vulnerable to disease, since all the sheep would have the same genetic makeup and be susceptible to the same diseases.
One reason that the farmer could not mate these cloned sheep with each other to increase the size of his flock is that the offspring created would be genetic clones, or "carbon copies," of the parent sheep. This is due to the fact that cloning creates an exact genetic duplicate of the parent sheep.
One reason that the offspring resulting from breeding these sheep with an unrelated sheep would not all be the same is that, while the parent sheep are genetically identical, the unrelated sheep would have different genes, resulting in a more diverse gene pool and greater variability in the offspring.
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Howard looks at a sample of pond water in the microscope. He sees cyanobacteria and plasmodium, a type of protist. What is one difference between the plasmodium and the cyanobacteria?
The name of the genus belonging to the family Sporazoa contains the parasite that causes malaria whereas cyanobacteria do not include any parasite.
Protozoa, a single-celled creatures that can only divide within a host cell, include Plasmodium. Photosynthetic microorganisms called cyanobacteria were historically referred to as blue-green algae. The majority are found in soil, freshwater, and saltwater habitats.
Although most species are unicellular, some can stay connected and create filaments. Blue-green algae, sometimes known as cyanobacteria, are not actually eukaryotic algae. They are Gram-negative prokaryotes that fix atmospheric N2 in addition to performing oxygenic photosynthesis. Ponds, lakes, water streams, rivers, and wetlands all have them.
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Insects and vertebrates are the only two hosts for the unicellular eukaryote species Plasmodium. Cyanobacteria have also developed a wide range of morphologies. There are many various types of cell organisation patterns, from single cells to multicellular forms with distinct branching shapes.
The phylum of gram-negative bacteria known as cyanobacteria, commonly referred to as cyanophyta, produces energy through photosynthesis. Although they are typically not formally categorised as algae, the word "cyanobacteria" relates to their hue, which also serves as the basis for the colloquial moniker "blue-green algae”. The malaria-causing Plasmodium genus of parasitic protozoans belongs to the sporozoan subclass Coccidia. Worldwide, particularly in tropical and temperate regions, Plasmodium, which affects red blood cells in mammals, reptiles, and birds is a common parasite.
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A _____ speed can reach up to 30 miles per hour. A. dragonflys B. dragonfly’s C. dragonflys’
Answer:
The answer is B
Explanation:
There needs to be an apostrophe since the speed belongs to the dragonfly
Answer:
I would say B. Dragonfly's :)
Hawks have eyes that allow them to see prey from very far away. Which term best describes this trait?
This trait of hawks is known as long-distance vision or long-distance sight. This ability allows hawks to spot prey from great distances, which gives them a leg up on other predators in the area.
This long-distance vision is made possible by the unique structure of their eyes, which contain a large number of rods and cones. The rods are located in the peripheral area of the eye, and they are especially sensitive to movement, allowing hawks to detect prey from far away.
The cones are located in the center of the eye and are responsible for color vision and visual acuity, which allows hawks to recognize prey and identify its size and shape. Together, these two structures allow hawks to have incredible vision, allowing them to detect prey from great distances.
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Long-distance vision or long-distance sight are terms used to describe this ability of hawks. Hawks have an advantage over other local predators thanks to their peripheral capacity to see prey at a large distance.
Their eyes' distinctive structure, which includes a significant number of rods and cones, allows them to see far away.
Hawks are able to recognise prey and determine its size and shape thanks to the cones, which are found in the centre of the eye and are in charge of colour vision and visual acuity. Hawks have extraordinary vision thanks to these two structures, which enable them to spot prey at a long distance.
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Question 6 (1 point)
State the law of logic that is illustrated.
If you miss class the day before a holiday break, then you will not get bonus points.
You miss class the day before Thanksgiving break. You do not get bonus points.
Law of Detachment
Law of Syllogism
The rule of distance still applies Q follows if P. He must study if he wants better grades. According to the Law of Detachment, we must separate ourselves from the outcome or result in order to allow what we want to manifest in the actual world.
She will practise if she plans to play the lead. Dogs snore when they are sleeping. We must learn to let go of the result once we have done our part for things to happen. And as soon as we release control, things start to happen. A legitimate form of deductive reasoning that adheres to a predetermined pattern is the law of syllogism, often known as reasoning by transitivity.
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The rule of distance still applies Q follows if P. He must study if he wants better grades. According to the Law of Detachment, we must separate ourselves from the outcome or result in order to allow what we want to manifest in the actual world.
She will practise if she plans to play the lead. Dogs snore when they are sleeping. We must learn to let go of the result once we have done our part for things to happen. And as soon as we release control, things start to happen. A legitimate form of deductive reasoning that adheres to a predetermined pattern is the law of syllogism, often known as reasoning by transitivity.
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. a(n) blankis a stretch of dna consisting of an operator, a promoter, and genes for a related set of proteins, usually making up an entire metabolic pathway.target 1 of 7 2. theblankis/are arranged sequentially after the promoter.target 2 of 7 3. a(n) blankis a specific nucleotide sequence in dna that binds rna polymerase, positioning it to start transcribing rna at the appropriate place.target 3 of 7 4. a(n) blankcodes for a protein, such as
Operons are segments of DNA that often make up a full metabolic pathway and include an operator, a promoter, and genes for a linked group of proteins.
What characteristics characterize operon expression?After the promoter, the operon's genes are/are organised in a particular order.a nucleotide sequence in the DNA that is particular to the promoter and binds rna polymerase, positioning it to begin rna transcription at the right time.A regulatory gene produces a protein that regulates the transcription of another gene or set of genes, such as a repressor.What is an operon and what is its role?Operon, a genetic regulatory system prevalent in bacteria and their viruses and distinguished by the aggregation along the DNA of transcription factors functionally related proteins. This feature permits coordinated control of protein production in response to cellular requirements.
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A _____ is a stretch of dna consisting of an operator, a promoter, and genes for a related set of proteins, usually making up an entire metabolic pathway.The ______ is/are arranged sequentially after the promoter.A ______ specific nucleotide sequence in dna that binds rna polymerase, positioning it to start transcribing rna at the appropriate place. a _______codes for a protein, such as a repressor, that controls the transcription of another gene or group of genes.if a diploid cell with 8 chromosomes goes through meiosis how many chromosomes will the remaining haploid have?
When a diploid cell with 8 chromosomes goes through meiosis, the resulting haploid cells will have 4 chromosomes each.
This is because meiosis is a type of cell division that produces gametes with half the number of chromosomes of the parent cell, which in this case is 8.
During meiosis, the parent cell undergoes two phases. In the first meiotic division, the chromosomes are replicated and then separated into two haploid cells, each with half the number of chromosomes of the parent cell.
In the second meiotic division, the chromosomes are separated again and two additional haploid cells are formed, for a total of four haploid cells.
Thus, each of the four haploid cells produced from a diploid cell with 8 chromosomes will have 4 chromosomes.
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if this was a human how many chromosomes could each of the resulting four embryos have, assuming that each cell is fertilized by another cell with the regular amount of chromosomes?
Each embryo has 46 chromosme, 23 pairs of chromosome from male parent and the female parent each.
if there are 4 embryos it means there are 92 pairs of chromosome, 184 chromosomes present where 92 is from each parents.
Human somatic cells have 46 chromosomes consisting of two sets of 22 homologous chromosomes and a pair of nonhomologous sex chromosomes ( 23 pair) total makes 23 pair of chromosome, 46 in number.
when fertilization takes place inside the womb of a female, it is always ensured that the embryo recieves equal amount of genetic material and chromosme, which is always 46 in number and 23 in pair.
when the zygote is formed, which is diploid,, the 46 chromosomes that a human cell contains exist in 23 pairs.
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Your school's drama club is a staging a presentation of a play that takes place in a Classical Greek city. Your teacher has asked you to lead a team to design and build a set that incorporates the features of Classical art and architecture.
Write a narrative about you and your team creating the set and scenery for the school's production of this play.
Classical architecture, which is characterized by symmetry, columns, rectangular windows, and marble, to name a few, was developed in Ancient Greece and Rome.
What are Classical art and architecture?Architecture is the art and technique of designing and building, as opposed to skills linked to construction.
Especially from the fifth century BCE in Greece to the third century in Rome, the column and pediment were major elements of classical architecture.
Therefore, Greek architecture was primarily supported by a post-and-beam framework, with columns bearing the weight.
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an important reason for determining the size of a society's ecological footprint is to determine the sustainability of its lifestyle. true false
The correct answer is true. An important reason for determining the size of a society's ecological footprint is to determine the sustainability of its lifestyle.
The ecological footprint can be refers to the impact of human activities which is measured in terms of the area of biologically productive land and water, which is required to produce the goods consumed and to assimilate the wastes generated.
The ecological footprint is also a method which is promoted by the Global Footprint Network. It is done to measure human demand on natural capital, i.e. the quantity of the nature that it takes to support people or an economy.
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The correct answer is true. An important reason for determining the size of a society's ecological footprint is determining the sustainability of its lifestyle.
Ecological footprint refers to the impact of human activity measured in terms of the biologically productive land and water required to produce the goods consumed and to absorb the waste produced I can.
Ecological Footprint is also the method promoted by the Global Footprint Network. It is conducted to measure human demand for natural capital, the amount of nature needed to sustain people and economies.
The Ecological Footprint compares how quickly we consume resources and create waste to how quickly nature absorbs our trash and generates resources.
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Anjelica is becoming increasingly hungry during a long late-afternoon class. Certain cells in her hypothalamus are probably becoming especially active. True or false
True. Nerve cells located in the hypothalamus are what cause the feeling of hunger when they are active. In order to do this, they produce the hunger-inducing proteins neuropeptide Y (NPY) and agouti-related peptide (AGRP).
Another group of nerves that effectively suppresses hunger is located quite close to these nerve cells. The brain's reaction to dehydration is not limited to thirst. The hypothalamus boosts the production of the antidiuretic hormone vasopressin, which is released by the pituitary gland and moves to the kidneys when the body is dehydrated. The hypothalamus in your brain, your blood sugar (glucose) level, how empty your stomach and intestines are, and several hormone levels in your body all play a role in regulating your hunger.
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True Anjelica is becoming increasingly hungry during a long late-afternoon class. Certain cells in her hypothalamus are probably becoming especially active.
The hypothalamus is a small but complex brain structure that performs an important function in homeostasis and hormone regulation. Anatomically, it's far placed among the two cerebral hemispheres and is a part of the diencephalon, a mind shape that also includes the thalamus.
The thyrotropin-liberating hormone (TRH), gonadotropin-freeing hormone (GnRH), increase hormone-liberating hormone (GHRH), corticotropin-releasing hormone (CRH), somatostatin, and dopamine are released from the hypothalamus into the blood and tour to the anterior pituitary.
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A. Transcribe and translate the normal and sickle cell DNA.
b. Identify this as a point or frameshift mutation. Explain.
c. If the base sequence read GGG CTT CTT AAA instead, would this result in sickle cell
hemoglobin? Explain.
A. The beta-globin gene's typical DNA sequence, which codes for the beta component of haemoglobin. B. The sequence has a single base (GAG) inserted as a result of a point mutation, more precisely an insertion mutation.
AAG GAG GAG GAG GAG GAG GAG GAG GAG GAG GAG GAG GAG GAG GAG GAG GAG GAG GAG GAG GAG GAG GAG GAG GAG GAG GAG GAG GAG GAG GAG GAG GAG GAG GAG GAG GAG GAG GAG GAG GAG G The additional GAG is introduced into the sickle cell DNA sequence, which is AAG GAG GAG GAG GAG GAG GAG GAG GAG GAG GAG GAG. This causes the amino acid glutamic acid to convert to valine at the beta-globin subunit's sixth position. In (b), point mutations are alterations to a single DNA base that fall within the transitional or transversional categories (purine to purine or pyrimidine to pyrimidine) (purine to pyrimidine or vice versa). Insertions or deletions of one or more nucleotides result in frameshift mutations.
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If a child has blood type O, and its mother has type A, could a man with type B be the father? why can’t a blood test be used to prove that he is the father?
Answer: Unfortunately, you cannot determine paternity by using the blood type method alone. Each person inherits ABO Blood Type from their parents.
Explanation: A man with type O blood would not be able to produce a child with type AB blood regardless of the mothers blood type. This is because type O blood is recessive and these individuals have two O alleles so the only allele they would be able to pass to a child would be "O".
similarity resulting from common ancestry is known as
Answer:
Similarity resulting from common ancestry is called homology .
One example of this could be pattern of arrangement of bones in limbs of cheetah, humans , whales and bats.
The structure gets modified according to different needs , like hands of human are used for holding objects , limbs of cheetah are used for running, bats use them for flying, etc .
This is a result of divergent evolution where structures get evolved to perform different functions according to the environment present there .
describe the movement of sodium and potassium across the cell membrane and the creation of a membrane potential or voltage.
Sodium ions and potassium ions leak slightly during resting potential. Because sodium diffuses from the outside, where it is more concentrated, to the interior, potassium diffuses in the opposite direction, because it is more concentrated inside the neuron.
Protein channels and protein pumps transfer potassium and sodium across the cell membrane. Passive transport is facilitated by protein channels. They, like tunnels, allow materials to flow from a high concentration area to a low concentration area without expending energy.
As a result, after a few potassium ions have moved out of the cell, the cell will have an excess of negative charge, whilst the surrounding solution will have an excess of positive charge, resulting in a potential difference.
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1. To function on their own, what must all organisms do?
maintain health only
get energy, maintain structure, and reproduce
select a habitat, maintain health, and reproduce
reproduce and maintain health only
Which of these characteristics are used to determine if something is considered living? Select all that apply.
growth
response to stimuli
cellular organization
metabolism
heredity
reproduction
homeostasis
3. Who developed a system of classifying organisms by genus and species?
Watson
Mendel
Darwin
Linnaeus
4. What are the ways that specialized cells group together? Select all that apply.
Organ systems combine to form an organism
Cells with similar functions form a tissue
Tissues with similar functions form an organ
Organs with related functions group to form a differentiated cell
5.What type of organism is able to cause a contagious disease?
rose
animal
plant
bacteria
6. To function on their own, what must unicellular organisms do?
perform a specialized task
do all jobs for survival
work with other cells
make tissues
7. All living things are classified with a name made up of three Greek words using their Domain, Class, and Phylum. True or False?
True
False
8. Single-celled organisms are.... (select all that apply)
able to differentiate to perform a specific job
able to meet all the challenges of life within one cell
often microscopic and are limited in size
made up of one cell
9. Cells differentiate and become specialized in unicellular organisms. True or False?
True
False
10. Which example is NOT an organism?
human
mold
lung
bacteria
To function on their own, all organisms must select a habitat, maintain health, and reproduce. Hence, option B is correct.
What are the features of a living organism?Growth, response to stimuli, metabolism, and reproduction are characteristics used to determine if something is considered living.
Linnaeus developed a system of classifying organisms by genus and species. Cells with similar functions form tissue and in this way, specialized cells group together.
Bacteria is able to cause a contagious disease. To function on their own, unicellular organisms must do all their jobs for survival. Yes, it is true that all living things are classified with a name made up of three Greek words using their Domain, Class, and Phylum. Single-celled organisms are able to meet all the challenges of life within one cell, often microscopic, and are limited in size and made up of one cell. It is false, that cells differentiate and become specialized in unicellular organisms. The lung is not an organism, it is an organ.
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Explain one advantage to scientific naming over common names.
Organisms are given scientific names to facilitate communication.
Because various countries speak different languages. As a result, if everyone refers to the same thing by different names, it becomes impossible to determine which species are being discussed.
The organism is now given a scientific name that is well-recognized around the world.
Scientific names are derived from the Greek language, which is a dead language that will not change in the future.
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The reproduction of DNA during interphase begins with:
1).thickening of the chromatin
2).enzymes separating the DNA molecules
3).enzymes producing a new DNA molecule
4).pairs of bases lining up
Answer:
2).enzymes separating the DNA molecules
Explanation:
appendages that propel bacterial cells through an aqueous environment include axial filaments and
Appendages that propel bacterial cells through an aqueous environment include axial filaments and Flagella.
What limbs do bacterial cells possess?
On certain bacterial species, the flagella, which are locomotional organs, and the pili (Latin for "hairs," also known as "fimbriae"), which are surface appendages, can be distinguished (Latin fringes). Both Gram-positive and Gram-negative bacteria have flagella, and their presence aids in identification.
What part of a bacterium permits it to move through a liquid environment?
Cells in aquatic environments can move by means of flagella. Flagella of bacteria function as propellers. They are brittle spiral filaments that protrude from the cell and spin in solution; they are made of flagellin protein subunits.
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Axial filaments and Flagella are appendages that drive bacterial cells across an aquatic environment.
Flagella, which are loco motional organs, and pili (Latin for "hairs," also known as "fimbriae"), which are surface appendages, may be recognized on some bacterial species (Latin fringes). Flagella are present in both Gram-positive and Gram-negative bacteria, and their presence assists in identification.
Flagella allow cells in watery settings to migrate. Bacterial flagella operate as propellers. They are brittle spiral filaments formed of flagellin protein subunits that protrude from the cell and spin in solution.
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Name two examples of how land can be used to support the growth of trees in your local community
Land can be used to support the growth of trees in your local community by providing place for root growth and nutrient absorption.
What is the role of trees in the community?Trees help communities and a strong economy and can supply numerous resources to the people that need them. While cities are obtained hotter, trees can reduce urban temperatures. They provide habitat and food for animals. eventually, trees are valuable green infrastructure communities to manage storm water. Don't misuse paper. We are all aware that we can help save trees from being cut down by using less paper.
Trees give us clean water to drink, air to breathe, shade, and food for humans, animals, and plants. They give habitats for numerous species of fauna and flora, fatwood for cooking trees and heat, materials for buildings and places of spiritual, cultural, and comical importance.
So we can conclude that Trees can bring people together as a landmark within and hearten pride in people within that community.
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a gene from a plant is inserted into a bacterial chromosome. The bacterium is the able to express the plant gene
-what do the two organisms have in common that allows the bacterium to express the plant gene?
- compare the location of DNA replication in a bacterium to that of a plant cell
read the question carefully. then enter your answer
To introduce a desired trait into a crop, a foreign gene (transgene) encoding the trait, as well as a "cassette" of additional genetic material, must be inserted into plant cells.
define gene ?
The term gene can have multiple distinct meanings in biology. The Mendelian gene is a fundamental unit of heredity, while the molecular gene is a DNA sequence that is translated to create functional RNA. Protein-coding genes and noncoding genes are the two categories of molecular genes.
During gene expression, DNA is transcribed into RNA first. The RNA might be directly functional or serve as an intermediary template for a protein that does anything. The inheritance of phenotypic characteristics is based on the passage of genes from one organism to its offspring. These genes combine to form various DNA sequences known as genotypes. The phenotypes are determined by genotypes as well as environmental and developmental variables.
To introduce a desired trait into a crop, a foreign gene (transgene) encoding the trait, as well as a "cassette" of additional genetic material, must be inserted into plant cells. The cassette contains a "promoter" DNA sequence that determines where and when the foreign gene is expressed in the host, as well as a "marker gene" that allows breeders to determine which plants contain the inserted gene through screening or selection. For example, marker genes may make plants resistant to non-medical antibiotics (e.g., agromycin, canamycin) or tolerant to particular herbicides.
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Which would scientists predict might happen due to solar flares?
*
1 point
power grid operations will go offline
high-frequency radio waves used for radio communication will be blocked
electrical systems in satellites will fail
Answer:
It wouldn't harm us on Earth directly; our atmosphere protects our human bodies from such harm. But the upper layers of Earth's atmosphere – and Earth's magnetosphere – could be affected. A powerful solar flare has the potential to fry electronics and take down power grids around the globe
which hormones derived from amino acids are poorly soluble in water, similar to steroid hormones?
Similar to steroid hormones, which are also produced from amino acids, thyroid hormones are not very water soluble.
Depending on how easily they dissolve, hormones can be categorised as either fat- or water-soluble. Water-soluble hormones are those that have a high affinity for water; in contrast, fat- or lipid-soluble hormones have a lower affinity for water and a higher attraction for lipids. Thyroid is a lipid soluble hormone that is formed from amino acids and is similar to steroid hormone in that it is poorly water soluble. An example of a thyroid hormone is thyroxine, while cortisol and testosterone are examples of steroid hormones.
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Thyroid hormones like steroid hormones are poorly soluble in water and also derived from the amino acids.
Hormones on the basis of their solubility could be classified as water soluble or fat soluble. Hormones having affinity towards water are termed as water soluble however hormones having less affinity for water and more for lipids are termed as fat or lipid soluble hormones.
Just like steroid hormone, thyroid is also an amino acid derived, poorly water soluble hormone that is categorized under lipid soluble hormone. Thyroxine is an example of thyroid hormone while cortisol and testosterone are some examples of steroid hormones.
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which statement about deforestation is false? group of answer choices before the mid-nineteenth century, the largest anthropogenic release of carbon into the atmosphere occurred via forest clearing. currently deforestation accounts for a negligible amount (less than 2%) of the anthropogenic release of carbon into the atmosphere. burning of forests releases co2 as well as accelerating decomposition rates in forest soils. currently most deforestation is occurring in the tropics.
Currently, less than 2% of the carbon released into the atmosphere by humans is attributable to deforestation.
As they expand, plants and trees take in co2 from the atmosphere. This is changed into carbon & stored in the soil, the plant's roots, branches, leaves, and trunks. When forests are cut down or burned, carbon dioxide, which is primarily the form of stored carbon, is discharged into the air. An important factor in climate change induced by humans is deforestation. The carbon that forests store is released when they are cut down or burned. Additionally, cutting down trees reduces a significant carbon "sink" that absorbs Carbon from the air. Deforestation has a direct impact on global warming, soil erosion, and airborne carbon dioxide levels. In addition to absorbing carbon dioxide and storing it in their tissues and soil, trees also release oxygen into the air.
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Option 2 is Correct. Less than 2% of the carbon that people emit into the atmosphere today is a result of deforestation.
Plants and trees absorb CO2 from the atmosphere as they grow. This is converted into carbon and stored in the soil as well as in the roots, branches, leaves, and trunks of the plants. Carbon dioxide, which is largely the form of stored carbon, is released into the air when forests are cut down or burned.
Deforestation is a significant role in human-caused climate change. When forests are burned or harvested, the carbon they store is released. Additionally, removing trees eliminates a huge "sink" of carbon that absorbs carbon from the atmosphere. Soil erosion, airborne carbon dioxide levels, and global warming are all directly impacted by deforestation.
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Correct Question:
Which statement about deforestation is false? group of answer choices
1. before the mid-nineteenth century, the largest anthropogenic release of carbon into the atmosphere occurred via forest clearing.
2. currently deforestation accounts for a negligible amount (less than 2%) of the anthropogenic release of carbon into the atmosphere.
3. burning of forests releases co2 as well as accelerating decomposition rates in forest soils.
4. currently most deforestation is occurring in the tropics.
what purpose do glial cells in the spinal cord and the brain have?
Glial cells in the spinal cord and the brain provide protection and support for neurons.
Glia are non-neuronal cells in the central nervous system (brain and spinal cord) and the peripheral nervous system that do not produce electrical impulses. They are also known as glial cells (gliocytes) or neuroglia. They keep the body in balance, form myelin in the peripheral nervous system, and support and protect neurons.
The primary function of glial cells is to support another type of brain cell known as neurons. Glial cells function as a secretarial pool for your nervous system and its janitorial and maintenance personnel. Glial cells may not perform the "big jobs" in the brain, but they are essential to their completion.
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Answer:
Glial Cells in Spinal Cord and Brain will protect the Neurons, Provide Nutrients to neurons and Remove the Dead Neurons by Phagocytosis.
Explanation:
Glial cells are supportive in function; they protect the neuron and help in formation of myelin sheath. They also provide nutrients and oxygen to Brain cells and also remove cell debris.They are non Neuronal cells which do not produce electrical signals.They are found in Central Nervous System and Peripheral Nervous System.Astrocytes, Oligodendrocytes, microglia and Ependymal are different types of glial cells in CNS and Schwann Cells,Precentral gyrus etc…are present in Peripheral Nervous System.Many Neurodegenerative diseases are caused due to damage of Glial cells.
explain how gel electrophoresis is used. why this method of dna fingerprinting can be considered such strong evidence to convict or clear a witness.
The DNA cells are stacked into a gel and set in an electrical area, which electrophoretically sorts the DNA chips into extra sets. These sets can be dyed with a radioactive color to make them evident to imaging systems.
Gel electrophoresis is utilized to make DNA fingerprints from crime locations and suspect examples. A match between tests recommends which suspect carried out the wrongdoing.
Gel electrophoresis is utilized to disconnect, distinguish, and describe properties of DNA sections in a wide range of circumstances and at various focuses during the cloning system. A limited quantity of DNA can be stacked into a well toward one side of a gel in a contraption that permits a current to be gone through the gel.
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Gel electrophoresis is used in DNA fingerprinting to distinguish between genetic material samples. Enzymes are used to break down the human DNA molecules into a collection of smaller, more manageable bits at specific characteristic places.
DNA fingerprinting is the process of comparing two DNA samples using gel electrophoresis, which involves running an electric charge across the DNA sample. DNA fragments are separated on a gel via a process called electrophoresis in DNA fingerprinting. With the exception of identical twins, this results in a pattern that can be examined and is particular to every person.
In gel electrophoresis, which involves the movement of a charged particle in an electrical current, a gel is used as an anticonvective medium or sieving medium. In addition to serving as a sieve medium and suppressing the thermal convection brought on by the application of the electric field, gels can also be employed to merely retain the finished separation so that a post-electrophoresis stain can be used.
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island biogeography is a topic that is frequently discussed in conservation biology. how can the theory of island biogeography be related to conservation biology? consider the amazon rain forest when forming your answer.
Islands are a particular problem in conservation biology because to their very high extinction rates.
Islands are stretches of land with water on three sides. Islands can be oceanic, which means they are situated on the oceanic crust and often far from a main continental mainland, or continental, which means they are situated on a continental shelf and were historically next to a main continental landmass. Oceanic islands are also typically tiny in size and produced by volcanoes.
The geographical investigation of the diversity of plant and animal species on islands is known as island biogeography. Species found on land, in freshwater habitats, and in the sea are all investigated in island biogeography. Insular biogeography is another term for island biogeography. According to the island biogeography theory, the number of species on an island is correlated with its land area and degree of isolation.
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when a friend taps you on your shoulder from behind and you turn to greet him or her, what type of neuron activated your muscles so you could turn around?
Sensory neurons are activated when a friend taps you on your shoulder from behind and you turn to greet him or her.
Sensory neurons are nerve cells that are activated by sensory input from the environment. For example, if you touch a hot surface with your fingertips, the sensory neurons will fire and send signals to the rest of the nervous system about the information they have received.
A sensory neuron is a type of nerve cell that conducts impulses from a receptor, such as those in the eye or ear, to a more central site in the nervous system, such as the spinal cord or brain.
Sensory neurons have dendrites on both ends and are linked together by a long axon with a cell body in the centre. Motor neurons have a cell body on one end, dendrites on the other, and a lengthy axon in the middle.
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Motor neurons are pivotal for voluntary and involuntary movements. They allow the brain and spinal cord to communicate with muscles, organs, and glands all over the body.
They shoot information down from the central nervous system to the muscle, organ, or gland that needs to reply. This is the only neurotransmitter in its class. Set up in the central and supplemental nervous systems; it's the primary neurotransmitter associated with motor neurons.
Overall, motor neurons( or motoneurons) comprise colorful, tightly controlled, complex circuits throughout the body that allow for voluntary and involuntary movements through the innervation of effector muscles and glands. The upper and lower motor neurons form a two-neuron circuit.
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What material has a specific heat of .79?
What elements are not present in Earth's crust but are present in the Hydrosphere or Trophosphere?
What are the major components of the hydrosphere? _________ & __________
The materials that have a specific heat of 0.79 are liquid ammonia, the elements that are not present in the earth's crust but are present in the hydrosphere or troposphere are sulfur and chlorine and the major component of the hydrosphere is water and its dissolving materials.
What is the significance of the hydrosphere and the troposphere?The hydrosphere and the troposphere are two different layers of the earth, the troposphere is the layer that contains most of the gases, while the hydrosphere is the layer where the ocean, pond, etc. are present.
Hence, the materials that have a specific heat of 0.79 are liquid ammonia, the elements that are not present in the earth's crust but are present in the hydrosphere or troposphere are sulfur and chlorine and the major component of the hydrosphere is water and its dissolving materials.
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what role do voltage-gated potassium channels play in the action potential? what role do voltage-gated potassium channels play in the action potential? voltage-gated potassium channels restore negative membrane potential after the spike. voltage-gated potassium channels interfere with sodium conductance. voltage-gated potassium channels help depolarize the membrane toward the threshold for an action potential. voltage-gated potassium channels maintain the resting membrane potential.
Answer:
Voltage-gated potassium channels regulate the movement of potassium ions across cell membranes. Activation leads to an increase in conductance and the termination of action potentials, hyperpolarization, and a reduction in excitability.
Explanation: