Question

1) Muscle lacks glucose-6-phosphatase and therefore glucose-6-phosphate cannot be dephosphorylated in muscle for export into the blood. Muscle stores glycogen for its use and muscle glycogen serve as a source of readily available fuel particular during the period of muscle exertion or physical exercise.

True or False?

54)Uncouple proteins can dissipate the proton gradient (or cause leakage of protons) in the inner membrane of mitochondria and thus decrease the membrane potential. As a result, more ATP molecules are synthesized and electron transport is stimulated.

True or False?

Answer 1

Question 1)

This statement is True

Reason:- Muscle cells lack the Glucose 6 Phosphates and thus, glycogen which is stored inside the muscle cells can not be transported out of the muscle cells and into the blood. This implies that they do not contribute to blood glucose levels. Thus glycogen in muscles is used during strenous exercise.

Question 2)

This statement is False

Reason :- Uncoupling proteins dissipate the Protons, making them leak across the membrane but this result in low ATP production as ATP are produced by the movement of protons across the membrane using the ATP Synthase complex which works like a motor, pumping the protons. Now since uncoupling protein make the proton leak without ATP synthase, the number of protons moving through the Synthase complex is decreased. This means low number of ATP are produced.