Q28 / 180 · NEET 2016 (Phase 2) · Botany

Oxidative phosphorylation is

  • A
    Formation of ATP by transfer of phosphate group from a substrate to ADP
  • B
    Oxidation of phosphate group in ATP
  • C
    Addition of phosphate group to ATP
  • Correct answer
    D
    Formation of ATP by energy released from electrons removed during substrate oxidation

Solution

Oxidative phosphorylation uses the energy of oxidation-reduction of a substrate to generate ATP. Oxidative phosphorylation is made up of two closely connected components: the electron transport chain and chemiosmosis. In the electron transport chain, electrons are passed from one molecule to another, and energy released in these electron transfers is used to form an electrochemical gradient. In chemiosmosis, the energy stored in the gradient is used to make ATP.

Hence, the correct answer is option: 'D'.

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