NTA Abhyas NEET2020BotanyRespiration in PlantsPractice
In a single process of the Krebs Cycle, decarboxylation takes place in ________ steps.
Options
- AFive
- BFour
- CThree
- DTwo
Correct answer
D. Two
Step-by-step solution
Oxalosuccinate in Step 4 of the Krebs cycle undergoes decarboxylation. In the presence of oxalosuccinate decarboxylase enzyme, oxalosuccinate is changed into α-ketoglutarate. In step 5 of Kreb's cycle -carbon compound, α – Ketoglutarate undergoes simultaneous dehydrogenation and decarboxylation in the presence of enzyme α – ketoglutarate dehydrogenase complex. This enzyme complex contains TPP, Lipoic Acid, Mg2+, and trans – succinylase. NAD+ and CoA are required. The products formed are 4 – carbon compound succinyl