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STD 11 - 12. Respiration in plants — BIOLOGY STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 ScienceBIOLOGYSTD 11 - 12. Respiration in plants1 Mark
MCQ
The chemiosmotic coupling hypothesis of oxidative phosphorylation proposes that adenosine triphosphate $(ATP)$ is formed because
  • A
    High energy bonds are formed in mitochondrial proteins
  • B
    $ADP$ is pumped out of the matrix into the intermembrane space
  • ✓
    A proton gradient forms across the inner membrane
  • D
    There is a change in the permeability of the inner mitochondrial membrane towards adenosine diphosphate $(ADP)$
✓

Answer

Correct option: C.
A proton gradient forms across the inner membrane
c
As per chemiosmotic hypothesis $ATP$ synthetase becomes active in $ATP$ formation only where there is a proton gradient having higher concentration of $H^{+i i}$ or protons on the inner side as composed to outer side

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