Rajasthan BoardEnglish MediumSTD 11 ScienceBIOLOGYSTD 11 - 12. Respiration in plants1 Mark
MCQ
The last or terminal cytochrome in respiratory chain is
A
$Cyt$ $b$
✓
$Cyt$ $a_3$
C
$Cyt$ $ a$
D
$Cyt$ $c$
✓
Answer
Correct option: B.
$Cyt$ $a_3$
b (b) Cytochrome $a_3$ 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.
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