An energy charge (EC) of 0.9 is roughly 80% ATP, 17% ADP and 3% AMP. At this EC, ____ enzyme activities are low and ____ enzyme activities higher.
A) ATP generating; ATP utilizing
B) ATP generating; NADH producing
C) ATP utilizing; ATP generating
D) ATP utilizing; NADH producing
E) NADH producing; ATP generating

Question

Quizplus · Accepted Answer

ATP generating enzymes are low at this EC because there is not enough ATP to drive the reactions. ATP utilizing enzymes are higher because there is more ADP and AMP available to be used as substrates.

An Energy Charge (EC) of 0