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which of the following correctly matches the component of respiration with its job description?
a. nadh-- electron carrier
b. oxygen-- initial electron acceptor
c. atp-- intermediate carbon molecule
d. fadh2-- sugar convert

First option is correct.

Explanation:

NADH - It is used for mental alertness and clarity. It is also used in Alzheimer's disease.

It is used as a reducing agent to carry electrons

So, it is carrier of electrons.

NADH is known as electron donor because of which it is used in electron transport chain.

So, NADH - Electron carrier is correctly matched with its job description.

Hence , first option is correct.

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