Biological oxidation in Krebs cycle involves

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(C) The Krebs cycle (also known as the Citric Acid Cycle) is a series of chemical reactions used by all aerobic organisms to release stored energy thr

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$O_2$

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(C) The Krebs cycle (also known as the Citric Acid Cycle) is a series of chemical reactions used by all aerobic organisms to release stored energy through the oxidation of acetyl-CoA derived from carbohydrates,fats,and proteins into carbon dioxide and chemical energy in the form of $ATP$.Biological oxidation in this context refers to the removal of electrons and hydrogen atoms from substrates (like isocitrate,alpha-ketoglutarate,etc.) by dehydrogenases,which are then transferred to coenzymes like $NAD^+$ and $FAD$.Although the Krebs cycle is part of aerobic respiration,the cycle itself does not directly use $O_2$ as a reactant. However,the process is dependent on the presence of $O_2$ because the electron transport system $(ETS)$ requires $O_2$ as the final electron acceptor to regenerate $NAD^+$ and $FAD$ from $NADH$ and $FADH_2$. Among the given options,$O_2$ is the most relevant factor associated with the aerobic nature of biological oxidation in the context of cellular respiration.

Similar Questions

In Kreb's cycle,the hydrogen atoms removed at the succinate level are accepted by:

Acetyl Co-$A$ reacts with . . . . . . to begin Krebs cycle.

The fate of pyruvic acid during aerobic respiration is:

Describe: Tricarboxylic acid cycle.

$A -$ The $TCA$ cycle starts with the condensation of Acetyl group with $OAA$ and water to yield citric acid.
$R -$ Kreb's cycle occurs in the cytoplasm of the cell.

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