Last electron acceptor in respiration is

Question

Last electron acceptor in respiration is (A)  O2  (B)  H2  (C)  CO2  (D) NADH

Tardigrade Admin · Accepted Answer

After the end of Krebs' cycle, final oxidation of reduced coenzymes occurs through ETS and oxidative phosphorylation. Each step in ETS involves release of

2 H

which dissociates into

2 H +

and

2 e -

. The ETS consists of a series of coenzymes and cytochromes through which the protons and electrons pass. The final electron acceptor is oxygen in aerobic respiration.
So the correct answer is 'Oxygen'.

Q. Last electron acceptor in respiration is

$O_{2}$

$H_{2}$

$C O_{2}$

NADH

Q. Last electron acceptor in respiration is

O2​

H2​

CO2​

NADH

$O_{2}$

$H_{2}$

$C O_{2}$