Question

Explain about chemiosmotic hypothesis.

Answer 1

The chemiosmotic hypothesis suggests that the action of ATP synthase is coupled with that of a proton gradient. It is the action of the proton gradient that causes a proton motive force that allows ATP synthase to phosphorylate ADP and inorganic phosphate to ATP.


hope it help
mark as brainliest

Answer 2

$\huge\mathcal{\boxed{\underline{\color{olive} Good\: Evening}}}$

$\huge\mathcal{\underline{\color{aqua}QUESTION}}$

⭐ Explain about chemiosmotic hypothesis.

$\huge{\orange{\boxed{\fcolorbox{lime}{cadetblue}{\pink{ANSWER}}}}}$

☕ The chemiosmotic hypothesis was proposed by Peter Mitchell. This 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.

☕ Chemiosmotic hypothesis explains the process of ATP synthesis in chloroplast. Movement of electrons through ETC generates a proton gradient and this gradient is used to synthesise ATP.

EXPLANATION ;-

☕ The chemiosmotic hypothesis was proposed by Peter Mitchell. The ATP and $\sf{NADH_2}$ generated during the light reaction is used for carbon dioxide fixation during the dark reaction.

☕ According to the chemiosmotic hypothesis, ATP is produced by due to the proton gradient created across the mitochondrial membrane. The essential components required for chemiosmosis are proton pump, proton gradient and ATP synthase. ATP synthase is an enzyme which helps in ATP synthesis. The enzyme ATP synthase has two part $\bf{F_0}$ & $\bf{F_1}$ . $\bf{F_0}$ is the part which transports protons across the membrane as a transmembrane channel while configuration changes in $\bf{F_1}$ activates the enzyme. They phosphorylate ADP i.e., add one more phosphorus group to the ADP and converts ADP(adenosine diphosphate) to ATP (adenosine triphosphate). The proton gradient developed across the membrane is the driving force of ATP synthase.