Home
Class 12
BIOLOGY
The chemiosmotic coupling hypothesis of ...

The chemiosmotic coupling hypothesis of oxidative phosporylaion process that adenosine triphoshate (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

C

a proton gradient forms across the inner membrane

D

there is a change in the permeability of the inner mitochondrial membrane toward Adenosine Diphosphate (ADP)

Text Solution

Verified by Experts

The correct Answer is:
C

The production of ATP with the help of energy liberated during oxidation of reduced coenzymes and terminal oxidation is called oxidative phosphorylation . Peter Mitchell (1961) gave a hypothesis known as chemiosmotic hypothesis for ATP synthesis .According to this when electrons flow from dual proton, electron carrier to a non-hydrogen carrier the `H^(+)` are released and expelled into the intermembrane space and thus creates a proton gradient with higher concentration of `H^(+)` in the inter membranous space than matrix.
Due to the proton motive force the portons flow back and energy liberated during this back flow of protons activate ATPase present in `F_(1)` head to synthesize ATP.
Promotional Banner