15. Xavier and Jill are practicing the 100-meter sprint. Which statement BEST describes the metabolic pathways their muscles will utilize to produce the quick
energy needed for this intense exercise?
a. Glucose is converted to pyruvic acid, followed by the aerobic pathways of the
Krebs cycle and the electron transport chain.
b. Glycolysis produces pyruvic acid and 2 molecules of ATP, then in the
absence of oxygen, alcoholic fermentation regenerates NAD to keep
glycolysis running.
c. The pyruvic acid from glycolysis enters the mitochondria and is broken down
in the Krebs cycle.
Chapter 10 Test
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