Which of the following is necessary for aerobic respiration in plants?

The synthesis of $ATP$ in photosynthesis and respiration is essentially an oxidation-reduction process involving the removal of energy from:

$O_2$ maintains the operation of the Krebs cycle by:

In $ETS,$ complex $II$ is .........

In oxidative phosphorylation,oxidation and phosphorylation take place simultaneously and form

In respiration,the largest amount of energy is produced in: