1.

What statements about muscle cells and ATP are TRUE? There maybe more than one answer. Select one or more:

a. Muscle cells involved in aerobic metabolism have longerendurance and have greater force generating capacity than musclesinvolved in anaerobic metabolism.

b. Muscle cells involved in aerobic metabolism have longerendurance but have smaller muscle mass than muscles involved inanaerobic metabolism.

c. When muscle cell is at work, creatine kinase will convert ADP+ creatine into ATP + creatine phosphate.

d. When muscle cell is at rest, creatine kinase converts ATP +creatine into ADP + creatine phosphate. e. Muscle cells involved inaerobic metabolism have a lower threshold for muscle fatiguecompare to muscles involved in anaerobic metabolism.

2.

Which of the following statements about glucose metabolism isTRUE? Can be more than one answer

Select one or more:

a. Glycolysis occurs in the cytosol with or without oxygenpresent inside the cell.

b. At the end of glycolysis, 1 molecule of glucose is convertedinto 2 pyruvate + 2 ATP + 2 NADH.

c. The net products of anaerobic metabolism are 2 pyruvate +2NADH   + 2ATP.

d. One molecule of glucose is first converted into glucose-6phosphate by hexokinase.

e. In the intermediate steps between glycolysis and Kreb cycle,2 pyruvate + 2 Coenzyme A molecules in the mitochondrial matrixwill give rise to 2 Acetyl CoA + 2 CO₂ + 2 NADH.

3. What are the correct statements about glucose transporters(GLUT)?

Select one or more:

a. GLUT-2 is found at the liver cells and beta cells of thepancreas.

b. GLUT-4 is found at the working muscle cells and adiposetissues.

c. GLUT transporters move glucose via simple and facilitateddiffusion.

d. When insulin binds at the tyrosine kinase receptor of theresting muscle cells, the reaction will promote GLUT-2 insertion atthe cell membrane

e. When the resting muscle cells are active during exercise,muscle cells become independent of insulin.