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What is the primary purpose of cellular respiration in cells?
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8. Respiration
Introduction to Aerobic Cellular Respiration
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What is the role of NAD+ in cellular respiration?
A
It breaks down glucose into pyruvate during glycolysis.
B
It serves as the final electron acceptor in the electron transport chain.
C
It acts as an electron carrier, accepting electrons during glycolysis and the Krebs cycle.
D
It provides the energy required to convert ADP to ATP.
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Understand the role of NAD+ in cellular respiration: NAD+ (Nicotinamide adenine dinucleotide) is a coenzyme that functions as an electron carrier.
During glycolysis and the Krebs cycle, NAD+ accepts electrons, becoming reduced to NADH. This is crucial for the transfer of energy.
NADH then carries the electrons to the electron transport chain, where it is oxidized back to NAD+, releasing the electrons.
These electrons are passed through a series of proteins in the electron transport chain, ultimately contributing to the production of ATP.
Recognize that NAD+ does not directly provide energy or act as the final electron acceptor; instead, it facilitates the transfer of electrons necessary for ATP synthesis.
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