According to the chemiosmosis theory of ATP generation. The ATP is generated utilizing the electrochemical gradient generated due to the accumulation of protons in the thylakoid lumen of chloroplast or peri-mitochondrial space in mitochondria. The accumulation of protons gives rise to an electric gradient, due to the accumulation of positive charge and a chemical gradient due to the accumulation of hydrogen atom. Related Theory The chemiosmotic hypothesis stated that a proton-motive force was responsible for driving the synthesis of ATP. In this hypothesis, protons would be pumped across the inner mitochondrial membrane as electrons went through the electron transfer chain. This would result in a proton gradient with a lower pH in the intermembrane space and an elevated pH in the matrix of the mitochondria. An intact inner mitochondrial membrane, impermeable to protons, is a requirement of such a model. The proton gradient and membrane potential are the proton-motive force that is used to drive ATP synthesis. In effect, the pH gradient acts as a "battery" which stores energy to produce ATP.
Chemiosmotic theory of ATP synthesis in the chloroplasts and mitochondria is based on:
NEET UG 2005 — Botany Respiration in Plants
Chemiosmotic theory of ATP synthesis in the chloroplasts and mitochondria is based on:
Held on 30 Apr 2005 · Verified 9 Jul 2026.
Options
- A
membrane potential
- B
accumulation of Na ions
- C
accumulation of K ions
- D
proton gradient.
Did you get this right?
Sign in to track your attempts and accuracy.
Your note
Sign in to keep a private note on this question. Nothing you write is ever public.
NEET UG Respiration in Plants in other years
More NEET UG Respiration in Plants questions
The complex II of mitochondrial electron transport chain is also known as
Identify the step in tricarboxylic acid cycle, which does not involve oxidation of substrate.
Match List I with List II \begin{array}{|l|l|c|l|}\hline & List I & & List II \\\hline A. & Citric acid cycle & I. & Cytoplasm \\\hline B. & Glycolysis & II. & Mitochondrial matrix \\\hline C. & Electron transport system & III. & Intermembrane space of mitochondria \\\hline D. & Proton gradient & IV. & Inner mitochondrial membrane \\\hline\end{array} Choose the correct answer from the options given below:
Match List-I with List-II : \begin{array}{llll} List-I & & List-II \\A. & ETS Complex I & I. & NADH Dehydrogenase \\B. & ETS Complex II & II. & Cytochrome bC { }_1 \\C. & ETS Complex III & III. & Cytochrome C oxidase \\D. & ETS Complex IV & IV. & Succinate Dehydrogenase\end{array} Choose the correct answer from the options given below :
Which of the following are correct about cellular respiration? A. Cellular respiration is the breaking of C - C bonds of complex organic molecules by oxidation. B. The entire cellular respiration takes place in Mitochondria. C. Fermentation takes place under anaerobic condition in germinating seeds. D. The fate of pyruvate formed during glycolysis depends on the type of organism also. E. Water is formed during respiration as a result of $\mathrm{O}_2$ accepting electrons and getting reduced. Choose the correct answer from the options below:
Other Botany topics for NEET UG
Keep practicing Respiration in Plants
Work through every NEET UG Respiration in Plants PYQ, year by year.