Botany - Respiration in Plants Question with Solution | TestHub

During Kreb's cycle, the oxalosuccinic acid loses a molecule of CO₂(decarboxylation) and as a result, α-ketoglutaric acid (5-carbon compound) is produced (one carbon atom has been removed in the form of CO₂). In the presence of CoA, NAD+ and enzyme dehydrogenase, α-ketoglutaric acid is converted into Succinyl CoA (4-carbon) and one carbon is lost in the form of CO₂. NAD+ is reduced to NADH.