A metabolic pathway, glycolysis, is active when cellular energy levels are___________; the regulatory enzyme, phosphofructokinase, is _______by ATP.
A) low; inhibited
B) high; activated
C) high; inhibited
D) low; activated

Question

Quizplus · Accepted Answer

Glycolysis is active when cellular energy levels are low, as it is an energy-yielding pathway that produces ATP. Phosphofructokinase is inhibited by ATP, so when cellular energy levels are high, the enzyme is less active, preventing excessive ATP production.

A Metabolic Pathway, Glycolysis, Is Active When Cellular Energy Levels