THE CELL
CELL COMMUNICATION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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transport a signal through the lipid bilayer
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relay a signal from the outside to the inside of the cell
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relay message from the inside of the membrane throughout the cytoplasm
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dampen the message
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Detailed explanation-1: -Second messengers are small molecules and ions that relay signals received by cell-surface receptors to effector proteins.
Detailed explanation-2: -Second messengers are the key distributors of an external signal, as they are released into the cytosol as a consequence of receptor activation and are responsible for affecting a wide variety of intracellular enzymes, ion channels and transporters.
Detailed explanation-3: -Many second messenger molecules are small and therefore diffuse rapidly through the cytoplasm, enabling information to move quickly throughout the cell.
Detailed explanation-4: -Second messengers trigger physiological changes at cellular level such as proliferation, differentiation, migration, survival, apoptosis and depolarization. They are one of the triggers of intracellular signal transduction cascades.
Detailed explanation-5: -Secondary messengers are capable of crossing the phospholipid bilayer cell membrane, whereas primary messengers often are not.