A) \[Cyt.\text{-}b\]
B) \[Cyt.\text{-}{{a}_{3}}\]
C) \[Cyt.\text{-}{{b}_{6}}\]
D) \[Cyt.\text{-}f\]
E) \[Cyt.\text{-}{{b}_{3}}\]
Correct Answer: B
Solution :
Cytochromes are electron-transport interme-diates containing haeme (or related prosthetic groups) in which the iron undergoes valency changes during electron transfer in oxidative phosphorylation in respiration. These electron carriers occur as repiratory assembly between coenzyme-Q and oxygen. \[(Co.Q)\xrightarrow{{}}Cyt.\,b\xrightarrow{{}}Cyt.\,{{C}_{1}}\xrightarrow{{}}\]\[Cyt.\,c\xrightarrow{{}}Cyt.\,(a+{{a}_{3}})\xrightarrow{{}}{{O}_{2}}\] Terminal cytochrome of respiratory chain is Cyt \[\text{-}{{a}_{3}}\]which transfer the electron to\[{{O}_{2}}\].
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