Exercise intolerance would be MOST likely to accompany a deficiency of
A) Phosphorylase
B) Fructose-l ,6?bisphosphatase
C) Glucokinase
D) Erythrocyte pyruvate kinase
E) Muscle glucose-6-phosphatase

Question

Quizplus · Accepted Answer

Phosphorylase deficiency, specifically muscle phosphorylase deficiency (McArdle's disease), leads to exercise intolerance because it impairs glycogen breakdown in muscles, limiting energy supply during physical activity.

Exercise Intolerance Would Be MOST Likely to Accompany a Deficiency