Multiple Choice
Enzymes bind to the transition state of the reactant because they have what?
3. Energy
Activated Carriers
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NAD+ becomes NADH through which of the following processes?
A
Hydrolysis
B
Oxidation
C
Reduction
D
Condensation
Verified step by step guidance1
Understand the role of NAD+ in cellular processes: NAD+ (Nicotinamide adenine dinucleotide) is a coenzyme found in all living cells. It plays a crucial role in redox reactions, carrying electrons from one reaction to another.
Identify the process of reduction: Reduction is a chemical reaction that involves the gain of electrons by a molecule, atom, or ion. In biological systems, this often involves the addition of hydrogen atoms.
Recognize the transformation of NAD+ to NADH: In the process of reduction, NAD+ gains electrons (and a hydrogen ion) to become NADH. This is a key step in cellular respiration, particularly in glycolysis and the citric acid cycle.
Differentiate between reduction and other processes: Hydrolysis involves the breaking of bonds with the addition of water, oxidation involves the loss of electrons, and condensation involves the joining of two molecules with the loss of a small molecule like water. None of these processes describe the conversion of NAD+ to NADH.
Conclude that the correct process is reduction: Since NAD+ gains electrons to form NADH, this transformation is a reduction process, aligning with the definition of reduction in redox reactions.
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