Cytochromes are .........

Which of the following contains both iron and copper?

Given below are two statements.
$Statement-I$: During aerobic respiration, $ETS$ releases energy in a stepwise manner to prevent damage to cells.
$Statement-II$: During aerobic respiration, $ETS$ provides water molecules.
In the light of the above statements, choose the correct answer from the options given below.

Cyanide kills an animal by

Cytochrome is found in

Number of $ATP$ molecules synthesized through oxidative phosphorylation during aerobic respiration of $3$ pyruvic acid molecules are