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vitfil [10]
2 years ago
6

How do animals get nitrogen?

Biology
2 answers:
Studentka2010 [4]2 years ago
7 0
I think its C. 

I hope this helps and please do correct me if im wrong.
Serggg [28]2 years ago
5 0

The correct answer is option C

Animals get nitrogen from the plants and animals they eat. The plants take nitrogen from the soil by the help of nitrogen fixing bacteria and then these plants are eaten by the animals and they get nitrogen in this way.

The carnivores animals feed on small animals that contain nitrogen.When they die the nitrogen gets back into the soil to be used again by the plants.

In this way the animals get nitrogen by eating the plants and animals present in the environment.

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Cholesterol's main role in the membrane seems to be:
olga nikolaevna [1]

Answer:

E) Improve membrane fluidity

Explanation:

Cholesterol constitutes the basic structural element of the skeleton of cell membranes. Without their reinforcement, the membranes would become extremely fluid and lose their consistency. Cholesterol is found in the esterified membranes in its hydroxyl group (OH): with fatty acids, mainly oleic and linoleic, or as cholesterol sulfate. The cholesterol-sulfate polar group is disposed on one of the faces of the membrane that interacts with other polar groups in that area, while its bulky hydrophobic portion is embedded between the apolar parts of the lipids that form the membrane skeleton and They fulfill many other functions, among which the reduction in the permeability of protons and sodium ions, and their participation in signal transmission. Cholesterol is also essential in phagocytosis processes carried out by cells to capture many nutrients and, in general, for the function of cleaning up organic waste produced by macrophages.

The membranes must have a fluid structure so that the integrated proteins can move "horizontally" to interact with their ligands and with other proteins. The fluidity is given by unsaturated fat. With the excess of saturated fat, the membranes become rigid, but only with the necessary unsaturated fat the membranes are extremely fluid and very sensitive to temperature changes. Cholesterol stabilizes the structure of the membranes; In order for them to have the correct structure, they must have the correct proportions of saturated, unsaturated fats and cholesterol. The membranes produced in the laboratory without cholesterol are unstable to temperature changes, drastically modifying their fluidity against the small temperature changes that occur in the physiological range.

In addition to its functions in cell membranes, cholesterol is an important product that metabolism uses as a raw material to make other compounds:

*Bile salts

*Sex hormones

*Hormones of the adrenal cortex (corticosteroids)

*Vitamin D (Calciferol)

3 0
3 years ago
Consider a cell in which Cl- distributes passively across the membrane according to the membrane potential. The resting membrane
UNO [17]

Answer:

1000 mM

Explanation:

Using V = -60 mV㏒₁₀[K/K'] where V = membrane potential = -60 mV, K = intracellular concentration = unknown and K' = extracellular concentration = 100 mM

So, V = -60 mV㏒₁₀[K/K']

-60  mV = -60 mV㏒₁₀[K/K']

dividing both sides by -60mV, we have

-60  mV/-60 mV = ㏒₁₀[K/K']

㏒₁₀[K/K'] = 1

taking antilogarithm of both sides, we have

[K/K']  = 10¹

multiplying both sides by K', we have

K = 10K'

K = 10 × 100 mM

K = 1000 mM

So, the intracellular Cl- concentration is 1000 mM

4 0
2 years ago
Which chromosome pair is involved in the mutation triple x syndrome
Lapatulllka [165]

54954 gmfn 45443 rfe546654

6 0
2 years ago
How can some organisms survive as single cells when other organisms require many cells?
irakobra [83]

Well, different organisms require different things. A single celled bacteria does not need a lot at all compared to a plant or animal. One cell can support a bacrerium. An animal needs many cells to carry out the functions necessary for it to live.

Happy to help! Please mark me the Brainliest!

6 0
3 years ago
What is the genotype for white chickens ​
Pie

Explanation: The allele for black is B and the allele for white is W. The heterozygous phenotype is known as erminette.

6 0
2 years ago
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