PHYSIOLOGY
MUSCLE ENERGETICS TCA CYCLE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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True
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False
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Either A or B
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None of the above
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Detailed explanation-1: -The glycerol-3-phosphate (G-3-P) shuttle is an important pathway for delivery of cytosolic reducing equivalents into mitochondrial oxidative phosphorylation, and plays essential physiological roles in yeast, plants, and animals. However, its role has been unclear in filamentous and pathogenic fungi.
Detailed explanation-2: -NADH Interfaces The shuttle that transports NADH into the mitochondrion is termed the malate-aspartate shuttle (Fig. 7-8), since it relies on specific transporters for malate and aspartate in the mitochondrial inner membrane. OAA in the cytosol is reduced to malate, regenerating NAD+ from NADH.
Detailed explanation-3: -In muscle, the glycerol-phosphate shuttle occurs, which results in 1.5 ATP per NADH.
Detailed explanation-4: -Which one of the following statements about the glycerol phosphate shuttle is true? It involves the transfer of electrons from cytoplasmic NADH to dihydroxyacetone phosphate (DHAP) to yield glycerol phosphate.