What are the functions of hemoglobin and chlorophyll?

Analogy type question:
$(1)$ Inspiratory Reserve Volume $(IRV)$: $2500$ to $3000 \ mL$ :: Inspiratory Capacity $(IC = TV + IRV)$: ........
$(2)$ $CO_2$ by hemoglobin: Carbamino-hemoglobin form :: Oxygen binds with hemoglobin: ........

In humans, respiration occurs in the following steps. Arrange these steps in the correct order.
$A$. Diffusion of $O_2$ and $CO_2$ between blood and tissues
$B$. Diffusion of $O_2$ and $CO_2$ across alveolar membrane
$C$. Pulmonary ventilation by which atmospheric air is drawn in and $CO_2$ rich alveolar air is released out
$D$. Cellular respiration
$E$. Transport of gases by the blood

Match List-$I$ with List-$II$.

List-$I$	List-$II$
$A$. Emphysema	$I$. Rapid spasms in muscle due to low $Ca^{++}$ in body fluid
$B$. Angina Pectoris	$II$. Damaged alveolar walls and decreased respiratory surface
$C$. Glomerulonephritis	$III$. Acute chest pain when not enough oxygen is reaching to heart muscle
$D$. Tetany	$IV$. Inflammation of glomeruli of kidney

Choose the correct answer from the options given below:

During rest,the metabolic needs of the body are at their minimum. Which of the following is indicative of this situation?

What is the last step involved in respiration?