Medicneet Logo
NEET 2016 Phase 2 · BiologyPrevious Year Question

Oxidative phosphorylation is

Answer: (D) Formation of ATP by energy released from electrons removed during substrate oxidation. Answer: (D) Formation of ATP by energy released from electrons removed during substrate oxidation.

  1. A.Formation of ATP by transfer of phosphate group from a substrate to ADP
  2. B.Oxidation of phosphate group in ATP
  3. C.Addition of phosphate group to ATP
  4. D.Formation of ATP by energy released from electrons removed during substrate oxidation✓

Correct Answer

(D) Formation of ATP by energy released from electrons removed during substrate oxidation

Solution & Explanation

Answer: (D) Formation of ATP by energy released from electrons removed during substrate oxidation. Solution: In oxidative phosphorylation the energy of oxidation-reduction (released as electrons from NADH/FADH2 pass down the ETS to O2) drives ATP synthesis via ATP synthase, so option D is correct. Option A actually describes substrate-level phosphorylation (direct phosphate transfer from a substrate to ADP), while B and C misstate the chemistry (ATP is formed, not oxidised, and not made by simply adding phosphate to ATP). NCERT: Ch 12, p.160, line ~43: "the energy of oxidation-reduction utilised for the same process".

🎯
43,000+ questions in हिंदी & English · one-tap toggle
Practice NEET 2016 Phase 2 Biology — free, with instant solutions
43,000+ NEET questions solved step-by-step, chapter-wise, in the MedicNEET app.
📚Practice all NEET Biology PYQs chapter-wise →💡Don't get it? Learn the Respiration in Plants concepts →
← Biology Q75Biology Q77 →

More NEET PYQ solutions

BiolWhich one of the following is an example of ex-situ conservation?BiolWhich of the following is an example of a zygomorphic flower? (NEET 2025)BiolWhich of the following is an example of actinomorphic flower? (NEET 2024)BiolIn the seeds of cereals, the outer covering of endosperm separates the embryo by a protein-rich layer called : (NEET 2025)BiolGiven below are two statements: Statement I : In a floral formula the symbol [percentage/division-type symbol] stands for zygomorphic nature of the flower, and G with a bar above it stands for inferior ovary. Statement II : In a floral formula the symbol [same symbol] stands for actinomorphic nature of the flower and G with a bar below it stands for superior ovary. In the light of the above statements, choose the correct answer from the options given below: (NEET 2025)BiolMatch List I with List II: List I — A. Scutellum; B. Non-albuminous seed; C. Epiblast; D. Perisperm. List II — I. Persistent nucellus; II. Cotyledon of Monocot seed; III. Groundnut; IV. Rudimentary cotyledon. Choose the option with all correct matches. (NEET 2025)BiolGiven below are the stages in the life cycle of pteridophytes. Arrange the following stages in the correct sequence. A. Prothallus stage B. Meiosis in spore mother cells C. Fertilisation D. Formation of archegonia and antheridia in gametophyte. E. Transfer of antherozoids to the archegonia in presence of water. Choose the correct answer from the options given below:BiolThe correct sequence of events in the life cycle of bryophytes is A. Fusion of antherozoid with egg. B. Attachment of gametophyte to substratum. C. Reduction division, to produce haploid spores. D. Formation of sporophyte. E. Release of antherozoids into water. Choose the correct answer from the options given below:
More: All NEET 2016 Phase 2 Biology PYQs · NEET Biology PYQs · All NEET PYQs · Previous year papers