Question : Give explanation of synthesisof ATP in mitochondria.

1.	Question : Give explanation of synthesisof ATP in mitochondria.
Answer» Solution :The energy RELEASED during the electron transport SYSTEM is utilised in synthesing ATPwith the help of ATP synthase (complex V). This complex consists of two majorcomponents `F_(0) and F_(1)`. The `F_(1) ` headpiece is a peripheral membrane protein complex and CONTAINS the site for synthesis of ATP from ADP and inorganic phosphate .`(ADP + Pi to ATP)` `F_(0)` is an integral membrane protein complex thatforms the channel through whichprotons cross the inner membrane . The passage of protons through and channel is COUPLED to the catalytic site of the `F_(1)` component for theproduction of ATP. For each ATP produced `2H^(+)`passes through `F_(0)`fromthe intermembranespace to the matrix down the electrochemical protongradient. THEREFORE ATP is synthesised.

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