Respiration In Plants Question 150
Question: In an electron transport chain in terminal oxidation the cytochrome which donates electrons to $ O_2 $ is:
Options:
A) Cytochrome b
B) Cytochrome c
C) Cytochrome $ a_3 $
D) Cytochrome a
Show Answer
Answer:
Correct Answer: C
Solution:
[c] Cytochrome $ a_3 $ is terminal cytochrome o ETC.
It has $ F{e^{+++}} $ and $ C{u^{++}} $ both.
With $ F{e^{+++}} $ , it picks up electrons and through $ C{u^{++}} $ it passes electrons to oxygen.