In TCA cycle, when succinate is converted to fumarate

Medical

Biology

Aerobic Respiration

Krebs Cycle

Question

In TCA cycle, when succinate is converted to fumarate

Hydrogen is liberated.

Oxygen is added.

Proton is removed.

Electron is added.

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Succinate and fumarate are the intermediates of TCA cycle. When succinate is converted to fumarate, 2 protons are removed which are taken by FAD and convert into FADH₂. This reaction is catalysed by succinate dehydrogenase.