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juin [17]
3 years ago
12

I will mark the brainliest comment! If Earth was like a hardboiled egg, which part of Earth would the egg yolk represent?

Biology
2 answers:
pshichka [43]3 years ago
8 0

Definitely the core of the earth.

Vikki [24]3 years ago
7 0

Answer:

A.Core, as it makes up the most part of Earth's diameter

Explanation:

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Cyclic AMP and calcium may be second messengers.

Explanation:

these are signalling molecules that are located inside the cells,They are releases  when cells   are in contact with  signals from an extracellular molecule. the extracellular molecules that cause the chemical  reaction  in an external environment  in the second messenger are called first messenger.

<u>the basic mechanisms of second messenger involve the binding of ligands to the cell membrane receptors( usually a trans membrane protein).causing   conformational  change in the receptor protein. The latter change affect the structural and functional activities of the receptors protein with a consequent  production of second messenger,</u>

<u />

Response of the cells  to the first messenger my cause different form of cellular reactions; the cells may  undergo depolarization  with influx of out flux of ions, differentiate to specialized cells  or migrate to another location.

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Second messengers are usually classified based on their polarity and molecular form this include the

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