Question

In mitochondria, ATP synthesis occurs

• A. At the outer membrane
• B. At the cristae
• C. In the matrix
• D. In the intra-cristal space

Answer 1

The correct option is B At the cristae

Mitochondria is a double membrane-bound structure; the outer and inner mitochondrial membrane.

The inner mitochondrial membrane is folded multiple times to form cristae and has F0-F1 particles that are the particles for the electron transport system. The inner membrane is also loaded with proteins that are involved in the ATP synthesis and this is a place where the formation of ATP takes place.

So, the correct option is 'At the cristae'