Molecule \"M\" is a second messenger, whose lifespan in cells is 1 min. After st

Question

Molecule "M" is a second messenger, whose lifespan in cells is 1 min. After stimulation of a cell surface receptor, production of M is reduced ten-fold. A decrease in concentration of M is required to mediate an increase in the activity of enzyme "E". What best describes the effect on this signaling pathway if the lifespan of "M" was suddenly changed to 100 min? (1 point Activity E will decrease more slowly Activity E will increase more slowly. There will be no significant effect. Activity E will decrease more rapidly. Activity E will increase more rapidly

Explanation / Answer

Activity E will increase more slowly - Since the lifespan of M is changed from 1 minute to 100 minute, the activity of enzyme E which may have increased its activity after 1 minute, will increase its activity slowly after 100 minutes, when M decreases.

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