LABORATORY REVIEW
CELL RESPIRATION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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NAD+
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NADP+
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NADH
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FAD
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Detailed explanation-1: -NADH is the reduced form of the electron carrier, and NADH is converted into NAD+.
Detailed explanation-2: -Its ability to switch between these two forms is what allows NAD to carry out its main function-carrying electrons from one reaction to another in the process of metabolism and energy production. As an electron carrier, NAD+ and NADH help to convert the nutrients in your food into a form of energy your cells can use.
Detailed explanation-3: -Two such electron carriers are NAD+ and FAD, which are both derived from B vitamins. The reduced forms of NAD+ and FAD, NADH and FADH2, respectively, are produced during earlier stages of cellular respiration (glycolysis, pyruvate oxidation, and the citric acid cycle).
Detailed explanation-4: -The complex accepts one electron at a time from cytochrome c and passes them four at a time to oxygen. The cytochromes, iron-sulfur centers, and copper atoms can carry only one electron at a time. Yet each NADH donates two electrons, and each O2 molecule must receive four electrons to produce water.