| Consider the following functions given below and identify the concerned nutrient. |
| (I) Activator of catalase. |
| (II) Important constituent of cytochrome. |
| (III) Important constituent of proteins involved In ETS. |
| (IV) Essential for chlorophyll synthesis. |
A) Mo
B) Fe
C) Cu
D) Ca
Correct Answer: B
Solution :
Iron (Fe) is the constituent of proteins involved in the transfer of electrons like ferre-doxin and cytochromes. During electron transfer, it is reversibly oxidised from \[{{\operatorname{Fe}}^{2+}}\]to \[{{\operatorname{Fe}}^{3+}}\] It activates catalase enzyme and is essential for the formation of chlorophyll.
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