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maks197457 [2]
3 years ago
12

Calcite makes rocks very resistant to chemical weathering A) true B) False

Biology
1 answer:
PtichkaEL [24]3 years ago
4 0
I’m pretty sure this is true
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Nitric oxide (no) participates in a signal transduction pathway that promotes relaxation of smooth muscle cells lining blood ves
timurjin [86]

Nitric oxide accomplishes this by elevating cGMP levels.

  • NO is a distinctive message. It is a gas, although it does dissolve in an aqueous solution.
  • It is a free radical with an unshared electron, which will react with thiol groups on proteins to form new complexes.
  • Unlike other second messengers, NO doesn't need energy to move inside and outside of cells. It can go where it wants, but it does not travel far because it is a reactive free radical.
  • NO acts within the cell that produces it as a second messenger. It operates as a paracrine molecule able to travel 10–20 cell diameters to affect the biology in surrounding cells. It can form complexes with proteins like hemoglobin, glutathione, and other proteins and then separate from those complexes.

Therefore, increasing cGMP levels is necessary.

Learn more about nitric oxide:

brainly.com/question/16791069

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3 0
2 years ago
Somatic cells in humans contain 46 chromosomes and an example is liver cell or sperm cell
shusha [124]

Answer:

the correct example is liver cell.

Explanation:

A somatic cell can be any kind of cell except the sexual ones (sperm and eggs)

5 0
3 years ago
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Which paragraph in the section "Speciation" BEST supports the idea that animals can adapt in ways that allow multiple species to
Lorico [155]

Answer:

I will say C

Explanation:

Sorry if I am wrong.

3 0
4 years ago
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The body's most important nonspecific defense against pathogens is/are
notsponge [240]
The body's most important nonspecific defense against  pathogens is the skin. The nonspecific defense system in the body guards against keeping infections from the body. Some of the nonspecific defenses are tears, mucus, and sweat among others. The correct answer will be D. 
3 0
4 years ago
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Diffraction refers to how a wave...
yulyashka [42]

Answer:

reacts when it encounters a obstacle.

Explanation:

It's the bending of waves around the corners of an obstacle or through an aperture into the region of geometrical shadow of the obstacle/aperture.

-Hope this helps!-

4 0
4 years ago
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