?

Biochemistry

Free Version

Upgrade subject to access all content

Moderate

Respiration, the Cori Cycle, and Sprinters

BIOCHM-HIA0XK

Sprinters vs. long-distance runners experience very different respiratory and metabolic demands during their races. Think about the demands on a sprinter running a 200-meter race relative to the Cori cycle (simplified image shown below).

Arya Bima. "Cori & Alanine Cycle." Wikimedia Commons. N.p., 27 Mar. 2011. Web. 05 Sept. 2016. (Modified by M. Rumpho-Kennedy).

Which of the following statements does NOT describe a typical respiratory or metabolic demand or response of a sprinter during a 200-meter race or in the recovery period, as described?

A

The sprinter is likely to accumulate high levels of lactate in their muscles and blood during the race.

B

The sprinter is likely to deplete their muscle glycogen pool during the race and restore it during recovery.

C

The sprinter is likely to experience anaerobic respiration during the race with ATP production relying heavily on lactate fermentation.

D

The sprinter is likely to experience increased glucose synthesis in the liver during recovery with the ATP provided by mitochondrial oxidative phosphorylation.

E

The sprinter is likely to restore muscle glycogen levels during the rest period by breaking down liver glycogen to glucose by gluconeogenesis and transporting the glucose in the bloodstream to the muscles.