During strenuous exercise, muscles may not be supplied with enough oxygen, causing a shift in metabolism resulting in the breakdown of pyruvic acid to lactic acid. This change in metabolism is called the
A)aerobic threshold.
B)lactic acid threshold.
C)pyruvic acid threshold.
D)glycogenic threshold.

Question

During strenuous exercise, muscles may not be supplied with enough oxygen, causing a shift in metabolism resulting in the breakdown of pyruvic acid to lactic acid. This change in metabolism is called the
A)aerobic threshold.
B)lactic acid threshold.
C)pyruvic acid threshold.
D)glycogenic threshold.

Quizplus · Accepted Answer

The shift in metabolism resulting in the breakdown of pyruvic acid to lactic acid during strenuous exercise is known as the lactic acid threshold. The other options (a, c, and d) are incorrect as they do not accurately describe this metabolic shift.

During Strenuous Exercise, Muscles May Not Be Supplied with Enough