In biology, a dichotomous key helps to identify and classify organisms based on similar features and structures
What is a dichotomous key?A dichotomous key is a tool used in biology to identify organisms based on similarities in their structure and function.
Organisms with similarities in their structure and function will be placed under the same category and any difference will be used to separate them.
For example in the dichotomous key for Shark, the features:
Fish with long tubelike body will identify sharksFish with body shape not tubelike will be used to separate fishes that are not shark.Therefore, a dichotomous key helps to classify organisms based on similar features and structures.
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Which of the following is the classic hot and dry desert? a. Arid desert b. Coastal desert c. Cold desert d. None of the above.
Answer:
a
Explanation:
When DNA is subjected to high temperatures, what happens?
The DNA molecule crystalizes.
The antiparallel strands reorient themselves to become parallel.
The phosphodiester bonds are broken.
The double helix converts into a triple helix.
The hydrogen bonds that hold the strands together are broken.
Answer:
The hydrogen bonds that hold the strands together are broken.
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You suspect that a newly discovered cell is undergoing photosynthesis. You add water and carbon dioxide to the cell and expose it to sunlight. What should be produced in the cell if photosynthesis is occurring
Given what we know, if the newly discovered cell is undergoing photosynthesis, it should produce sugar molecules and oxygen.
Why should we expect these substances?As with any cell that undergoes photosynthesis, the cells require some substances as the prerequisites and then expel others as the products. For photosynthesis, these substrates required are carbon dioxide and sunlight, as a result, they then produce sugar molecules as the final result, and release oxygen as a by-product.
Therefore, we can confirm that if the newly discovered cell is undergoing photosynthesis, it should produce sugar molecules and oxygen.
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12. In the space below, list the characteristics which are referred to as "certain similarities” that
the basis for classifying organisms in the same basic group.
What are the structures of the circulatory system?.
Answer:
The circulatory system consists of three independent systems that work together: the heart (cardiovascular), lungs (pulmonary), and arteries, veins, coronary and portal vessels (systemic). The system is responsible for the flow of blood, nutrients, oxygen and other gases, and as well as hormones to and from cells. An average adult has 5 to 6 quarts (4.7 to 5.6 liters) of blood, which is made up of plasma, red blood cells, white blood cells and platelets.
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In some cases of head injuries, the cerebrum may be affected. This type of injury could cause a loss of _________ and impaired __________.
1) a. breathing regulation
b. reflexive movement
c. voluntary movement
2) a. heart rate
b. involuntary movement
c. speech
In some cases of head injuries, the cerebrum may be affected. This type of injury could cause a loss of voluntary movement and impaired speech
What is the effect of hyperinsulinism on the metabolism of carbohydrates, amino acids, and lipids by the liver
Hyperinsulinism produces an excessive uptake of glucose by the liver (hypoglycemia). It also leads to an interruption in amino acid and fatty acid catabolism.
What is hyperinsulin?Hyperinsulin is a condition associated with the excessive production of insulin, a key hormone in glucose metabolism.
The main effect of hyperinsulinism is an excessive uptake of glucose by the liver, which is associated with hypoglycemia.
Hyperinsulin can also produce a chronic interruption in the amino acid and fatty acid metabolism (catabolism).
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Why has Earth’s climate changed so rapidly in recent years?
Answer:
increased activities that releases greenhouse gas in the world
Explanation:
Human activities in the world leads to production of greenhouse gas. These greenhouse gases trap the radiation from the sun and makes the earth to be in a high temperature.
The third one is correct though burning fossils releases CO2 gases and many more.
Vicky made the following list to describe humidity:
It is the amount of water vapor in the air.
It is shown on weather maps in millimeters or in inches.
It can seen on cold surface as water droplets.
Which statement best describes why the list is incorrect?
It can be seen on hot surfaces as water droplets.
It is shown on weather maps as a percent.
It is the amount of moisture in the air.
It is the temperature of water in the clouds.
Answer:
I think the answer is C
Explanation:
Which group includes ALL renewable resources?
a) coal,trees,water,oil
b)water, wind,sun,plants
c)minerals,sun,natural gas, water
Answer:
option B
Explanation:
They are all renewable resources
DNA molecules are double stranded and RNA molecules are _____ stranded
Answer:
Single stranded
Explanation:
What are domains in biology? Question 8 options: internet website classification system highest ranking of organisms in taxonomy classification under which most dominant animals fall.
Domain is the highest ranking of organisms in taxonomy.
The correct option is b.
What do you mean by domain?Domain is the highest ranking of the biological system.
In the system there are three domains
ArchaeaBacteriaEukaryaThis is the highest classification, after this further classification of living organism is done.
Thus, the correct option is B
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1) What do you think made Rachel Carson's book, Silent Spring, so inspiring to readers?
Kingdom Plantae Question 12 options: Eukaryotic Prokaryotic Unicellular Multicellular Autotrophic Heterotrophic.
Answer:
Eukaryotic Multicellular Autotroph
Circle the correct word: Electrons contribute to an atom's (mass or volume).
Answer: Volume
Explanation: Only protons and neutrons contribute to the atom's mass, because electrons have a mass of only [tex]\frac{1}{1836}[/tex] that of the proton, so it's not even counted.
However, electrons take up 99.9% of the atom, in what is called the Electron Cloud.
The color variation which enables some organisms to survive because their color keeps them from being easily seen in their environment is called:.
The fetus receives antibodies from the mother that last several weeks after birth. This is an example of _____ immunity
Answer:
Natural passive
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What binds to this structure on the hemoglobin molecule?.
Answer:
It is the iron atom that binds oxygen as the blood travels between the lungs and the tissues. There are four iron atoms in each molecule of hemoglobin, which accordingly can bind four molecules of oxygen.
Define the absorbance value displayed on the spectrophotometer.
Absorbance is the measure of the quantity of light intensity absorbed by a sample solution.
What is absorbance?Absorbance, denoted by A, is used to measure the amount of light intensity that is absorbed by a sample.
Absorbance is measured in a technique called spectrophotometry using a device called spectrophotometer. The spectrophotometer measures the intensity of light as photons of light passes through the sample.
The amount of that incident light that is absorbed by the sample is then displayed on the screen or output of the spectrophotometer.
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how are coniferous trees trees different from deciduous trees
(select all that apply)
1. conifers roll Combs as means of reproducing.
2. conifers have waxy, needle-shaped leaves to retain water.
3. conifers drop their leaves in color seasons to conserve water
4. conifers grow berries as mean of reproducing.
Answer:
1.
2.
Explanation: i believe think of christmas trees as coniferous and maple as diciduous
Answer:
1. conifers roll Combs as means of reproducing.
2. conifers have waxy, needle-shaped leaves to retain water.
Explanation:
just go with it you be fine
Hemophilia is a disease that causes uncontrollable bleeding. If a father has it, all of his daughters will be carriers of the disease, and about half of his sons will have the disease.
Which macromolecule is involved in how hemophilia is passed from parents to their children?
Explanation:
Hemophilia is a disease that is characterized by an abnormal blood clotting process. There are many different proteins that are involved in the clotting process and a single mutation or change in one of them could result in serious effects. Hemophilia is characterized by an abnormal version of one of the many proteins involved in the clotting process, the proteins that are commonly affected are the coagulation factor 8 or 9 (VIII or IX). These abnormal proteins are caused by a mutation in the gene (within the DNA) that codifies for the production of each protein. In other words, a mutation in the part of the DNA, (gene F8) will lead to a dysfunctional coagulation factor VIII and a mutation in the gene F9 will lead to a dysfunctional coagulation factor IX. Importantly, these mutations could be inherited and could cause hemophilia. Therefore, an error in the DNA and subsequently, an error in the protein will cause hemophilia. Finally, it is important to mention that there are other types of hemophilia that are not caused by the above-mentioned mutations, such as acquired hemophilia.
Answer:the macromolecule which is involved in haemophilia which is passed from the parents to the children is the defect in factor number 8 of clotting cascade.
Explanation:
In escherichia coli, the c ring of atp synthase is composed of 12 c subunits. For one fully productive revolution of this ring, how many protons are transported across the membrane for each molecule of atp produced?.
Answer: The membrane-spanning component of human mitochondrial ATP synthase (best known as FO, reflecting the fact that it can be inhibited by oligomycin) is composed by no less than nine polypeptides (a, b, c, d, e, f, g, F6 and 8), while the soluble catalytic core of the complex (F1) consists of five different subunits
Explanation: i checked it with my teacher
What do you do for scurrying good marks as you want?
Answer:
you have to read and understand what you are going to write about.
I need help please!!! I swear this isn’t even in my text book!
Answer:
[tex]\huge\boxed{\sf Option \ B. }[/tex]
Explanation:
Cell Membrane:
are the outermost surface of the cell for animals and secondmost surface of the cell from plants after cell wall.Surface of the cell membrane:
Cell membrane is partially and selectively permeable which means that it only allows certain substances in and out of the cell.[tex]\rule[225]{225}{2}[/tex]
The type of DNA base paring seen in DNA is called?
Answer:
complementary base pairing
Explanation:
There are chemical cross-links between the two strands in DNA, formed by pairs of bases held together by hydrogen bonds. They always pair up in a particular way, called complementary base pairing: thymine pairs with adenine (T-A)
Viruses are not considered living things for all
these reasons EXCEPT
Cannot reproduce on
their own.
Do not have genetic
material.
Cannot metabolize
energy
Cannot produce
proteins.
Answer:
B. Viruses do not have genetic material.
Explanation:
Viruses are made up of genetic material which is enclosed by a capsid. It'll either have RNA or DNA as it's genetic material.
If the base sequence on a DNA molecule is ATC, what would be the mRNA codon sequence?
If the base sequence on a DNA molecule is ATC then UAG will be the mRNA sequence.
How many mRNA codons are there?The four nucleotides found in mRNA — A, U, G, and C — can be combined in a total of 64 different ways because codons are three-letter structures. These 64 codons are made up of 61 amino acid codons and three stop signal codons, which signal the completion of protein synthesis.
A codon is a specific sequence of nucleotides on an mRNA that denotes either a stop signal during protein translation or a specific amino acid. A nucleobase (also known as base), a sugar, and a phosphate group make up a nucleotide.
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similar body structure of a chicken wing? (example: pelvis in fish/cetaceans, feet/)hoof of a horse…)
Explanation:
body structure of chicken is feather
3)The Moon rises approximately one hour later every day from sunrise to sunset, as the phases of the moon progress. Why is this?:A)Earth takes 365 days to revolve around the Sun.B)Earth rotates 360 degrees on its axis in twenty-four hours.C)The Moon rotates 360 degrees on its own axis in twenty-seven days.D)The Moon’s position shifts everyday due to its revolution around the Earth
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Answer:
The answer is B
Explanation:
The earth rotates 360 degrees on its axis every 24 hours which is why we have day and night.
Can someone help me find real images for Metaphase?
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