PHYSIOLOGY
MUSCLE ENERGETICS GLYCOLYSIS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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To re-oxidise the NADH so there is not net loss of resources for energy generation
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To increase the efficiency of substrate level phosphorylation by capturing more energy
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To prepare the gylcolysis products for the kreb cycle (TCA cycle)
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None of the above
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Detailed explanation-1: -NADH is then needed in order to form either lactic acid or ethanol. As NADH releases its electrons, it becomes oxidized and transforms back into NAD. NAD will then re-enter glycolysis to take in more electrons. It is important that NAD is regenerated in order to keep glycolysis going.
Detailed explanation-2: -If NADH cannot be oxidized through aerobic respiration, another electron acceptor is used. Most organisms will use some form of fermentation to accomplish the regeneration of NAD+, ensuring the continuation of glycolysis.
Detailed explanation-3: -Cells have only a limited amount of NAD+. When it is reduced to NADH by catabolic reactions, it must be oxidized back to NAD+ so that those reactions can continue. If the organism is carrying out aerobic respiration, the electrons from NADH can enter the electron transport system, reforming NAD+.