Verified Answer :

truemkhai

NAD+ is the answer.

FADH2 is also a electron carrier, but it carriers electrons through Complex II of the hydrogen gradient. NAD+ is the main carrier, because it will produce more ATP because it goes through Complex I through the end of Complex IV.

Answer:

NAD+

Explanation:

NAD+ serves to accept electrons during redox reactions of glycolysis and citric acid cycle. Once it accepts electrons, it is reduced into NADH.

All the NADH formed during glycolysis, citric acid cycle, and link reaction are channeled into electron transport chain (NADH). The NADH molecules donate their electrons to terminal electron acceptor oxygen through ETC.

Thereby, NAD+ serves as an electron carrier during cellular respiration and carries the electrons from intermediates of its reactions to the oxygen molecule.  


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