Rajasthan BoardEnglish MediumSTD 11 ScienceBIOLOGYSTD 11 - 12. Respiration in plants1 Mark
MCQ
The haem protein complexes, which act as oxidizing agents are known as
A
Haemoglobin
B
Myoglobin
C
Chlorophyll
✓
Cytochrome
✓
Answer
Correct option: D.
Cytochrome
d Cytochromes are small proteins (intrinsic membrane proteins) that contain a cofactor, haem, which holds an iron atom. The iron carries electrons and cycles between $+2$ and $+3$ oxidation states. These form a part of electron transport chain in mitochondria and chloroplast and act as an electron transporter or electron acceptor in respiration and photosynthesis
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