Question

A. Which one of the following statements concerning adaptive mechanisms affecting muscle metabolism is correct?

a) Contractile activity decreases the concentration of PGC-1 ααsignaling molecules, such as AMP, reactive nitrogen species, and reactive oxygen species.

b) PGC-1 αα interacts with transcription factors to play a key role in regulating the expression of genes that influence muscle fiber type, mitochondrial biogenesis, and capacity for fatty acid oxidation.

c) AMPK serves to inhibit energy producing pathways in skeletal and cardiac muscle during exercise.

d) AMP concentrations in muscle decrease during exercise due to stimulation of the myokinase reaction.

Answer 1

C) AMPK serves to inhibit energy producing pathway in skeletal and cardiac muscle during exercise