Q. Study the following sentense . The accumulation of pyruvic acid in the muscle causes fatigue ATP is resynthesized in the muscle by the phosphorylation of ADP by a phosphogen. Cori and cori’s cycle occurs in the muscles. The phosphogen in the vertebrate muscle is arginine phosphate. The correct set of answers for muscle contraction is
A) I and II
B) II and IV
C) III and IV
D) II and III
Explanation
The ATP is actively and continuously replenished by energy rich muscle phosphogen, In muscles, the pyruvic acid produced by glycolysis is transformed into lactic acid in absence of oxygen. Accumulation of lactic acid in the muscle causes fatigue. In the liver, 80% of lactic acid resynthesized by a process called Cori’s cycle.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.