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svp [43]
3 years ago
8

What happens on the outer surface of a cell?

Biology
1 answer:
Papessa [141]3 years ago
5 0
<span>The outer surface of a cell is surrounded by the plasma membrane, which marks the boundary between the cellular content and the external medium. The plasma membrane is a continuous film made up of molecules of lipids, proteins, and carbohydrates. Lipids form a double layer and proteins are arranged in an irregular and asymmetric way between them. These components have mobility, which gives the membrane a high degree of fluidity. It acts as a semipermeable and selective barrier regulating the chemical composition of the cell.</span>
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ivann1987 [24]

Answer:

Statement B is false.

Explanation:

PKA and PKG is both have binding domains to attach with nucleoside monophosphate and help in modulating these enzymes that explains that PKA is more related to the PKG than PKC at the level of amino acid.

At the level of  polypeptide chain level PKG has single polypeptide chain whereas in PKA modulatory domains are located on different poly peptide chain. Both are activated by the nucluoside triphosphate, more precisely PKA by cAMP and PKG is by cGMP respectively, whereas PKC is activated by DAG or Ca or both depending on the isofom.

Thus, the correct answer is - option B.

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Tresset [83]
Convective zone is the answer. If you need an explanation just ask.
Hope this helps :)
5 0
3 years ago
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4 0
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MrRissso [65]

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This theory of evolution was proposed by Charles Darwin.

3 0
3 years ago
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natali 33 [55]

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The normal range for 24-hour urine volume is 800 to 2,000 milliliters per day (with a normal fluid intake of about 2 liters per day).

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3 years ago
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