Answer:
They break down dead plants and animals. They can be found in rotting logs, dead animals, and even in yourself! They also help break down food so it makes it easier for us to digest!
Explanation:
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PLEASE RATE!
Which of these REQUIRES active
transport in order to cross the plasma
membrane?
A. a sodium ion moving AGAINST the concentration gradient
B. a hydrogen molecule moving WITH the concentration
gradient
C. an oxygen molecule moving WITH the concentration
gradient
D. a carbon dioxide molecule moving WITH the concentration
gradient
Answer: I think it might be A. a sodium ion moving AGAINST the concentration gradient
Explanation:
The secretion of gastric juice, strengthening of contractions of the lower esophageal sphincter, increased motility of the stomach and relaxation of the pyloric sphincter are stimulated by which hormone
The secretion of gastric juice, strengthening of contractions of the lower esophageal sphincter, increased motility of the stomach and relaxation of the pyloric sphincter are stimulated by gastrin. It is a hormone.
What is a hormone?A hormone is a chemical messenger produced and secreted by the body tissues in order to play specific roles.
Gastrin is a protein (peptidic) hormone associated with the secretion of gastric acid in the digestive system.
This peptidic hormone (gastrin) is fundamental for the normal functioning of the digestive system.
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True or false: Fossils can include traces and imprints of plants and animals as well as their remains.
Given what we know, we can confirm that the statement being made is in fact true, Fossils can include traces and imprints of plants and animals as well as their remains.
Why is this statement about fossils true?Fossils are the preserved remains of ancient biological creatures. These fossils are not specific to one type of organism. Instead, fossils often contain many organisms at once. Plants, animals, fungi, bacteria, and single-celled living things are all examples of what we may find within fossils.
Therefore, we can confirm that the statement being made is in fact true, Fossils can include traces and imprints of plants and animals as well as their remains.
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hello humans ~
Which of the following is a disease caused by protozoans?
Tuberculosis
Polio
Malaria
Typhoid
first of all, im not a human, im an alien or as my family and friends say. Second of all, the answer is Typhoid
These antibiotics include penicillin and its derivatives and work by inhibiting the production of the bacterial ____________ .
These antibiotics include penicillin and its derivatives and work by inhibiting the production of the bacterial enzymes
These antibiotics include penicillin and its derivatives and work by inhibiting the production of the bacterial enzymes.
What is Penicillin's mechanism of action?
The Penicillium mold is the source of penicillin, one of the first and still-commonly-used antibiotics. The numerous mold species that produce different types of penicillin ; the naturally occurring penicillins (those produced during the fermentation process of mold) and the semi-synthetic penicillins are two categories into which penicillium can be categorized.
All penicillins function in the same way, which is to inhibit the bacterial enzymes necessary for the creation of cell walls in replicating microorganisms and to activate other enzymes that demolish the microorganism's protective wall. They are therefore only effective against microbes that are actively forming cell walls and multiplying, and they are likewise safe for use on human cells.
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What are two of the main factors that limit primary production in the epipelagic
Answer:
1) NUTRIENTS
2) LIGHT
Explanation:
So the two potential limiting factors in marine primary productivity are the availability of nutrients and light. Most phytoplankton stay near the surface to absorb red light.
Question 1 (5 points)
When salt is added to water, what happens to the molecules?
Water and salt molecules remain together.
The water molecules remain together. The salt molecules break apart.
Water and salt molecules break apart.
The water molecules break apart. The salt molecules remain together.
Answer:
The water molecules remain together. The salt molecules break apart.
A man has type A blood and his wife has type B blood. A physician types the blood of their four children and is amazed to find one of each of the four blood types. He is not familiar with genetics and calls upon you to explain how such a thing could happen. What would you say? Explain using a description of the parental allele possibilities.
Answer:
Explanation:
There's nothing to get amazed to find all the four types of blood groups in the progeny, provided the parental genotypes are AO and BO.
The four types of blood groups included A, B, AB and O.
Had the parental genotypes been AO and BO, the progeny would include all the four blood groups A with genotype AO, B with genotype BO, AB with genotype AB and O with genotype OO.
It happens only in this case and not in any other as the alleles A and B are co dominant to each other and completely dominant over the allele O.
8. How do scientists know when a mass extinction took place?
A
They find more fossils of plants
B.
They find fossils of animals that died suddenly.
C.
They find a sudden disappearance of many fossil species.
D.
They find evidence of changes in the Earth's atmosphere.
Answer:
C.
They find a sudden disappearance of many fossil species.
Explanation:
A mass extinction is usually defined as a loss of about three quarters of all species in existence across the entire Earth over a “short” geological period of time. Given the vast amount of time since life first evolved on the planet, “short” is defined as anything less than 2.8 million years.
Which of the following could NOT be determined from using the law of superposition?
A.
That a sedimentary layer is older than the one above it
B.
That a sedimentary layer is younger than the one below it
C.
That a sedimentary layer is 100 million years old
D.
That a sedimentary layer contains fossils older than those in another layer
Answer:
C, that a sedimentary layer is 100 million years old.
Explanation:
The law of superposition functions without regard to exact times, basing its times relative to the layer above or below it. Without the age of a specific layer being giver in advance, you will not be able to determine the specific age of the layer being examined, only a relative age.
What is the chemical reaction responsible for the oceans becoming more acidic?
Answer:
CO2 is creating, ph levels to decreases causing it to become acidic
Explanation:
this is because of us putting more co2 in the air causing great change in ph levels. :(
Today, biologists classify organisms primarily by their
Group of answer choices
a.DNA.
b.All choices are correct.
c.behavioral differences.
d.Appearances only.
Answer:
It's DNA.
Explanation:
DNA is the most recent utility to determine the origin of an organism and it's powers compared to it't weaknesses.
Nowadays, it is the primary tool:
Deoxyribonucleic acid is a polymer composed of two polynucleotide chains that coil around each other to form a double helix carrying genetic instructions for the development, functioning, growth and reproduction of all known organisms and many viruses. DNA and ribonucleic acid are nucleic acids.
In the diagram of a polymer above , the repeating subunits are known as
A) amino acids
B) polysaccharides
C) nucleotides
D) fatty acids
Answer:
C) nucleotides
Explanation:
This diagram is an image of a DNA strand. The monomer of DNA is a nucleotide and there are 9 in this image. Each nucleotide is distinguished by their nitrogenous base pairs. Every new pair represents a new nucleotide.
Hope this helps!
hello humans ~
An infectious disease is ___________ .
caused only by bacteria
spread from person to person
spread from animal to animal
caused only by viruses
Answer:
Spread from person to person
Explanation:
A disease is concidered this once we learn if a person can catch it from another person.
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PLEASE RATE AND MARK BRAINLIEST!!!
Answer:
spread to other to the person
Specific neurons being used in playing tennis are given more stimulation for an extended amount of time with repeated motor practice, ____________.
Example
When specific neurons used in practicing piano are given extra stimulation for long hours on end through repeated motor practice:
there is greater myelination of those neurons
Cells produce atp most efficiently in the presence of:.
Which term refers to the energy an object has due to its position? A Electrical energy B. Potential energy C. Thermal energy D. Kinetic energy
Answer:
Option B
Explanation:
Using the process of elimination, we will find this answer.
It's not option A because electrical energy involves electricity and has nothing to do with motion/position, although you can build machines fueled on electrical energy to create motion or position. (Hence; vehicles)
It is option B because potential energy is energy the object has when it's at rest, which means when the object remains in the same position it has potential energy.
It's not option C because thermal energy involves heat which you could use heat energy and convert it into electrical and then build a machine that is fueled on electrical energy that creates motion or position. (Hence; boats)
It's not option D because Kinetic energy is purely energy when a object is in motion, has nothing to do with a position of a object. As long as the object is moving it has kinetic energy.
Your answer is option B or "potential energy."
Hope this helps.
How can cells from the same organism have such different shapes and functions?
Answer: As each cell differentiates, the DNA changes so that each type of cell has different DNA once it reaches maturity. Mutations in the cells’ nuclei lead to new combinations of DNA, resulting in different shapes and functions in the different types of cells.
Hope this helps!
. All of the following are correct about cell respiration EXCEPT
(A) It is an oxidative process
(B) All plant and animal cells carry out respiration all the time
(C) It consists of glycolysis, Krebs cycle, and the electron transport chain
(D) Oxygen molecules are pumped across the cristae membrane to the outer compartment
(E) Most ATP is produced during cell respiration as a result of the electron transport chain and chemiosmosis
I believe its (E) Most ATP is produced during cell respiration as a result of the electron transport chain and chemiosmosis.
hello humans ~
Which organelle is called the “powerhouse of the cell”?
A. Nucleus
B. Endoplasmic reticulum
C. Mitochondrion
D. Golgi apparatus
Answer:
Mitochondria
Explanation:
'Mitochondria – the powerhouse of the cell.
Hope it helps !!!brainliest pls!!!Answer:
c that an easy one
Explanation:
i always remeber that one
whats an example of differentiation?
Answer:
stem cells, while neurons are one of the most differentiated cells known.
Explanation:
Cell differentiation takes place fundamentally thanks to controlled changes in the transcriptional program; that is, coordinated changes in gene expression.
skunk vs panda. Who will win?
Answer: Skunk
Explanation: The panda will try to use their slow attack, but the skunk will counter it with their stinky spray that smells bad and the panda will run away.
What is a galaxy?
(Writing Question)
Answer:
A galaxy is a huge collection of gas, dust, and billions of stars and their solar systems, all held together by gravity.
Explanation:
hope this helps
Answer:
a system of millions or billions of stars, together with gas and dust, held together by gravitational attraction.
Explanation: Hope I could help... :)
If 15% of a particular DNA strand are nucleotides containing cytosine, what percentage of the DNA molecule would contain thymine
Answer:
35%
Explanation:
To make a DNA helix, two DNA strands are required. They are connected by the nitrogenous bases on each strand. Each type of nitrogenous base is complementary to another type: cytosine (pyrimidine) pairs with guanine (purine) and thymine (pyrimidine) pairs with adenine (purine). This means they only bond with their pair.
For every cytosine, there must be a guanine bonded to it. So, if 15% of the strand is cytosine, another 15% must be guanine.
Since,
15% + 15% = 30% and 100% - 30% = 70% ,
30% of the DNA strand consists of the cytosine-guanine pair and 70% of the DNA strand consists of the adenine-thymine pair.
Since,
70% / 2 = 35% ,
70% is made up of equal parts adenine and thymine, 35% of the DNA strand must contain thymine.
what technology was used to map features on the seafloor? -Echo sounding
-plate tectonics
-eutrophication
-transducer
Answer:
Echo sounding
Explanation:
Echo sounding is the key method scientists use to map the seafloor today. The technique, first used by German scientists in the early 20th century, uses sound waves bounced off the ocean bottom.
What are some ways this community could protect their watershed?
Don't dump anything in the river
O Limit pesticide and fertilizer to prevent runoff
O Protect natural vegetation along river
All of the above
Answer:
All of the above can prevent the watershed
What is photosynthesis?
The process in which green plants use sunlight to make their own food.
Photosynthesis is necessary for life on Earth.
Photosynthesis requires sunlight, chlorophyll, water, and carbon dioxide gas.
It is the number one source of oxygen in the atmosphere.
Answer:
ENGLISH:Photosynthesis is a process used by plants and other organisms to convert light energy into chemical energy that, through cellular respiration, can later be released to fuel the organism's activities.SPANISH:La fotosíntesis es un proceso utilizado por las plantas y otros organismos para convertir la energía de la luz en energía química que, a través de la respiración celular, puede liberarse más tarde para alimentar las actividades del organismo.Hope it helps! ^_^need it now 100 points
Which of following has the least ecological tolerance to severe storms?
A very large island
A mainland coastal region
An inland area away from water
An island farther from the mainland
Answer:
An island farther from the mainland
Explanation:
The least ecological tolerance to severe storms C) An island farther from the mainland.
What are the 3 zones of ecological tolerance?Ecological tolerance is the variety of tolerance that an organism can endure before damage or demise, become aware of the three zones of ecological tolerance. most advantageous variety, zones of physiological stress, and region of intolerance.
What's a species' variety of tolerance?
The tolerance range is described because of the variety among the minimum and maximum limits to which organisms can tolerate positive modifications of their environment to live to tell the tale. it's miles the variety of environmental situations which can be tolerable for survival in a species.
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Which letter kingdom represented would be animals?
B)
C)
E)
F)
Answer:
F)
Explanation:
Animals are multicellular organisms (that's why we can see them) with a nucleus containing DNA. They consume other organisms. This means they are heterotrophs. Animal cells don't have cell walls. If you look at its cell, there is no cell wall visible. This eliminates options B, C, and E. So, option F would represent animals.
An organism with a genome of about 50,000,000 base pairs is found to have faulty dna repair proteins, even though its dna polymerase still proofreads while replicating the dna. About how many point mutations would you expect in this genome after two rounds of dna replication?.
Based on the error rate of 1 in 10000 nucleotides, the number of point mutations is 1000 mutations.
What is DNA repair?DNA repair is the method where errors which occur during DNA replication are corrected.
During DNA replication, the error rate is approximately 1 error for every 10,000 nucleotides copied.
This rate is reduced to only 1 error for every 1 billion nucleotides by DNA repair proteins.
Since the DNA repair proteins of the organism are faulty, the error rate is 1 in 10000.
Number of nucleotides copied = 2 × 50,000,000 = 100,000,00
Number of errors = 100,000,00/10,000 = 1000 point mutations
Therefore, the number of point mutations is 1000 mutations.
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