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alexdok [17]
3 years ago
8

What statement about natural selection is true

Biology
2 answers:
Andru [333]3 years ago
7 0

What are the options?

Softa [21]3 years ago
5 0

Which of the following statements about natural selection is true? A. Natural selection favors individuals that reproduce more than others. B. Natural selection occurs in opposition to evolution. C. Natural selection can be used by farmers to generate organisms with desirable traits.


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A lung cell maintains homeostasis. Of what is this an example?
hodyreva [135]

The right answer is A: intercellular communication.

An example of intercellular communication is the one between the kidney, liver and lungs to preserve water-soluble homeostasis.

Angiotensinogen, an inactive protein produced by the liver, circulates in the blood. It is the precursor of the active peptides angiotensin I and II, and the only substrate of renin.

In the event of a drop in the pressure in the renal artery, renin (an enzyme sometimes considered as a hormone) is secreted in the kidney by differentiated myoepithelial cells of the arteriole afferent of the juxtaglomerular apparatus. There are also other stimuli promoting renin secretion: decreased natremia in the distal convoluted tubule, ß-agonists, hyperkalemia, PGI2 and stimulation of juxta-glomerular cells by the sympathetic nervous system)

The angiotensinogen is cleaved by the renin and forms a decapeptide called "angiotensin I", inactive.

Angiotensin I will then be converted primarily to angiotensin II by a carboxypeptidase, the angiotensin converting enzyme. This enzyme, secreted by the liver, acts at the pulmonary level.

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3 years ago
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A dependent variable is best described as
d1i1m1o1n [39]
A dependent variable is the variable that gets affected during an experiment. It changes in response to the independent variable.
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4 years ago
In the carbon cycle, carbon is found in____
IgorC [24]

In the atmosphere mostly as carbon dioxide.

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3 years ago
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Some help quick
zysi [14]

Answer:

cells

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cells are responsible for the structures and functions

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3 years ago
Each cell is surrounded by a cell membrane composed of a lipid bilayer with protein channels interspersed. Which one of the foll
Alinara [238K]

Answer:

Small nonpolar molecules, such as O2(oxygen) and CO2(carbon dioxide)

Explanation:

Oxygen and carbon dioxide are soluble in the lipid bilayer (mostly because oxygen and carbon dioxide are lipids) and therefore can readily cross cell membranes. Small uncharged polar molecules, such as H2O(water), also can diffuse through membranes but will have a hard time doing so, but larger uncharged polar molecules, such as glucose(carbohydrates), cannot.

Hope this helps! Brainliest?? Anyways have a great day my loves <3

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