Chemiosmotic theory of ATP synthesis in the chloroplasts and mitochondria is based on:
- Proton gradient
Accumulation of K+ ions
Accumulation of Na+ ions
- Membrane potential
The Correct Option is A
Solution and Explanation
According to this theory, a proton (H+) gradient or proton motive force is established across the inner mitochondrial or thylakoid membrane, and ATP is synthesized as protons flow back through ATP synthase enzymes, driving the phosphorylation of ADP to ATP. This proton gradient is established through the electron transport chain during the process of oxidative phosphorylation in mitochondria and photophosphorylation in chloroplasts.
So, the correct option is (A): Proton gradient
Top Questions on Photosynthesis in higher plants
- Choose the correct sequence of no. of molecules formed when 6 mol of CO\textsubscript{2 enters into calvin cycle pathway}
- AP EAPCET - 2025
- Botany
- Photosynthesis in higher plants
- Choose the correct statements among the following
I. Proton gradient across the membrane decreases due to cyclic flow of electrons between PQ and cytochrome b.
II. NADP reductase enzyme is located on the stroma side of the membrane.
III. PQ removes electron from the stroma- AP EAPCET - 2025
- Botany
- Photosynthesis in higher plants
- Number of ATP and NADPH required to make one triose through Calvin cycle.
- AP EAPCET - 2025
- Botany
- Photosynthesis in higher plants
- Choose the correct statements among the following
I. Joseph Priestley (1770): Showed that plants have the ability to take CO2 from the atmosphere and release O2.
II. Jan Ingenhousz (1779): Release of CO2 by plants was possible only at night and only by the non-green parts of plants.
III. Julius Von Sachs (1884): Green parts in plants produce glucose which is stored as starch.
IV. C. Van Niel (1931): Photosynthesis is essentially a light dependent reaction in which hydrogen from an oxidizable compound reduces CO2 to form carbohydrates.
Correct statements: I, III, IV- AP EAPCET - 2025
- Botany
- Photosynthesis in higher plants
- Choose the incorrect statement among the following
- AP EAPCET - 2025
- Botany
- Photosynthesis in higher plants
Questions Asked in NEET exam
A sphere of radius R is cut from a larger solid sphere of radius 2R as shown in the figure. The ratio of the moment of inertia of the smaller sphere to that of the rest part of the sphere about the Y-axis is :
- NEET (UG) - 2025
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Predict the major product $ P $ in the following sequence of reactions:
(i) HBr, benzoyl peroxide
(ii) KCN
(iii) Na(Hg), $C_{2}H_{5}OH$- NEET (UG) - 2025
- Organic Chemistry
AB is a part of an electrical circuit (see figure). The potential difference \(V_A - V_B\), at the instant when current \(i = 2\) A and is increasing at a rate of 1 amp/second is:
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- A wire of resistance \(R\) is cut into 8 equal pieces. From these pieces, two equivalent resistances are made by adding four of these together in parallel. Then these two are added in series. The net effective resistance of the combination is:
- NEET (UG) - 2025
- Resistance
- Consider the diameter of a spherical object being measured with the help of a Vernier Callipers. Suppose its 10 Vernier Scale Divisions (V.S.D.) are equal to its 9 Main Scale Divisions (M.S.D.). The least count in the M.S. is 0.1 cm and the zero of V.S. is at -0.1 cm when the jaws of Vernier callipers are closed. If the main scale reading for the diameter is \(M = 5\) cm and the number of coinciding vernier division is 8, the measured diameter after zero error correction, is:
- NEET (UG) - 2025
- Measurement of length
Concepts Used:
Aerobic respiration
It is the release of a relatively large amount of energy in cells by the breakdown of food substances in the presence of oxygen:
Glucose + Oxygen → Carbon Dioxide + Water.