Question

ATP synthesis occurs in:

• A. Mitochondria
• B. Chloroplast
• C. Both a and b
• D. Leucoplasts

Answer 1

The correct option is C Both a and b

ATP synthesis takes place in the mitochondria as well as chloroplast.
In mitochondria, ATP synthase is located in the inner mitochondrial membrane and the F${}_1$-part projects into the mitochondrial matrix.
The chloroplast adenosine triphosphate (ATP) synthase is located in the thylakoid membrane and synthesizes ATP from adenosine diphosphate and inorganic phosphate at the expense of the ectrochemical proton gradient formed by light-dependent electron flow.