PHYSIOLOGY
MUSCLE ENERGETICS GLYCOLYSIS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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It absorbs light
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It is an electron carrier
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It is a light-reflecting pigment
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It acts as long-term energy storage
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Detailed explanation-1: -It is an electron carrier used to temporarily store energy during cellular respiration. This is found in two forms in cells: NAD+ is an oxidizing agent – it accepts electrons from other molecules and becomes reduced. This reaction forms NADH, which can then be used as a reducing agent to donate electrons.
Detailed explanation-2: -NADH is a strong electron donor: because its electrons are held in a high-energy linkage, the free-energy change for passing its electrons to many other molecules is favorable (see Figure 14-9). It is difficult to form a high-energy linkage.
Detailed explanation-3: -NAD+ is an important coenzyme involved in the transport high-energy electrons to the electron transport chain in aerobic respiration. Aerobic respiration is the process by which the majority of the body’s energy (ATP) is produced.