Question

the release of electrons from these electron carriers is a(n) ____ reaction
reduction
favored
spontaneous
enzymatic
oxidation
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Explanation:

Oxidation is the loss of electrons. When electron - carriers like NADH and FADH₂ release electrons, they are oxidized. For example, NADH loses electrons to become NAD⁺. This is a key part of cellular respiration's electron - transport chain.

Answer:

oxidation