The enzymes of the electron transport system are located in the .....

Oxygen is critical for aerobic respiration. Explain its role with respect to $ETS$.

According to the chemiosmotic coupling hypothesis,$ATP$ is synthesized in oxidative phosphorylation because:

Given below are two statements.
Statement-$I$: Cytochrome $c$ is a small, copper-containing protein loosely attached to the inner membrane.
Statement-$II$: Cytochrome $c$ acts as a mobile electron carrier transferring electrons between complex $I$, $II$, and $IV$.
In the light of the above statements, choose the correct answer from the options given below.

Which mineral elements are essential for the process of respiration?

$A$ : Cytochrome $c$ is a peripheral protein.
$R$ : It is found attached on the perimitochondrial space side of the inner mitochondrial membrane.