One theory of aging that makes apparent commonsense postulates that organisms have only so much energy to expend in a lifetime. Therefore, the basic idea is that the rate of a creature's metabolism is
A) variable and needs to be increased with exercise.
B) variable and needs to be monitored.
C) is fixed and cannot be changed.
D) related to how long it lives.

Question

Quizplus · Accepted Answer

The theory mentioned suggests that the amount of energy an organism can expend over its lifetime is finite and implies that the rate of metabolism, which determines energy expenditure, is directly related to lifespan. This is why option D is correct, as it aligns with the idea that the faster an organism's metabolism, the quicker it may expend its lifetime energy reserve, potentially affecting its longevity.

One Theory of Aging That Makes Apparent Commonsense Postulates That