Respiration In Plants Question 108

Question: The last or terminal cytochrome in respiratory chain is [CBSE PMT 1992; RPMT 1997]

Options:

A) $ Cytb $

B) $ Cyta_3 $

C) $ Cyta $

D) $ Cytc $

Show Answer

Answer:

Correct Answer: B

Solution:

Cytochrome a3 contains both iron and copper, in this Fe picks the electrons and through $ Cu $ it hands over electron to oxygen, so cytochrome $ a^{3} $ called terminal electron donar.