1 Which produces the most ATP per substrate molecule a Glyco

1.) Which produces the most ATP per substrate molecule?

a.) Glycolysis

b.) Citric acid cycle

c.) Oxidative phosphorylation & electron transport

d.) Creatine phosphate

2.) Which muscle fiber type accumulates lactic acid and fatigues quickly?

a.) Fast glycolytic

b.) Slow oxidative

c.) Fast oxidative

d.) Slow glycolytic

Solution

Please find the anwers below:

Part 1) Cellular respiration process which generates maximum ATP molecules per molecule of substrate is oxidative phosphorylation and electron transport in the mitochondria. This is a high efficiency process and remains the most efficient process for generation of ATP.

Part 2) The muscle fibres normally undergo fatigue due to accumulation of lactic acid following anaerobic respiration. The fast glycolytic muscles undergo rapid fatigue since they are involved in active generation of energy due to glycolysis and very rapid accumulation of large amount of lactic acid. Unlike slow glycolytic muscles do not fatigue easily and are thus fatigue resistant.