Answer to Question #89203 in Biochemistry for Phiroj Kumar bariha

Question

What is the difference between the electron transport reactions of mitochondria and the ones which take place in photosynthetic process ?

Answer 1

Electrons are transported from NADH and FADH2 to oxygen in mitochondria. In case of photosynthetic process that takes place in chloroplasts, oxygen donates the electron to photosystem, where sunlight energy causes its excitation to the high-energy level. As a result, transport of electrons can proceed back to NADP+.