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Biology
Posted 10 months ago

How do oxidation and reduction (redox) reactions work? Explain how the transfer of electrons is important to catabolic reactions and the release of energy, including how NAD+NADHN A \frac{D^{+}}{N} \mathrm{ADH} and FAD/FADH 2 are involved.
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Answer from Sia
Posted 10 months ago
Answer
Oxidation and reduction reactions involve the transfer of electrons, which is crucial for catabolic reactions and the release of energy in biological systems. NAD⁺/NADH and FAD/FADH₂ are important electron carriers in these processes.
Solution
a
Oxidation and reduction: Oxidation is the loss of electrons, while reduction is the gain of electrons. In biological systems, these reactions often occur simultaneously in what is known as a redox reaction
b
Importance in catabolic reactions: During catabolism, organic molecules such as glucose are broken down, releasing energy. Electrons are transferred from these molecules to electron carriers like NAD⁺ and FAD during this process
c
Role of NAD⁺/NADH and FAD/FADH₂: NAD⁺ is reduced to NADH, and FAD is reduced to FADH₂ as they accept electrons. These reduced carriers then transport electrons to the electron transport chain, where the energy from electrons is used to produce ATP
Key Concept
Redox reactions are fundamental to energy release in catabolic pathways, with NAD⁺/NADH and FAD/FADH₂ serving as essential electron carriers.
Explanation
The transfer of electrons to NAD⁺ and FAD during redox reactions in catabolism is a key step in the conversion of energy from organic molecules into a form that cells can use, primarily ATP.

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