GENERAL HISTOLOGY

CONNECTIVE TISSUE GLAND

ENDOCRINE

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
What do second messengers do?
A
transport a signal through the lipid bilayer
B
relay a signal from the outside to the inside of the cell
C
relay message from the inside of the mebrane throughout the cytoplasm
D
dampen the message
Explanation: 

Detailed explanation-1: -Second messengers are molecules that relay signals received at receptors on the cell surface-such as the arrival of protein hormones, growth factors, etc.-to target molecules in the cytosol and/or nucleus.

Detailed explanation-2: -Many second messenger molecules are small and therefore diffuse rapidly through the cytoplasm, enabling information to move quickly throughout the cell.

Detailed explanation-3: -Cyclic AMP (cAMP) Another second messenger used in many different cell types is cyclic adenosine monophosphate (cyclic AMP or cAMP), a small molecule made from ATP.

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