Question

40. Which statement about cell signaling pathways is true? a. Cellular responses are always short-lived. b....

40. Which statement about cell signaling pathways is true?

a. Cellular responses are always short-lived.

b. Cellular responses are always long-lived.

c. Signaling is always initiated by membrane-bound receptors.

d. Signaling is always initiated by intracellular receptors.

e. Intracellular signal transduction pathways are always activated by a chemical signaling molecule.

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Answer #1

ANSWER IS:

e. Intracellular signal transduction pathways are always activated by a chemical signaling molecule.

EXPLANATION:

Intracellular signalling has series of chemical interactions either in cellular membrane or the intracellular space and can also from the cellular membrane to the intracellular space.

Rest statements are false as cellular responses can be short-lived or long-lived.

Signaling can be initiated by membrane-bound receptors or can be initiated by intracellular receptors.

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