Question

respiration full details ​

Answer 1

Respiration refers to the mechanisms for obtaining oxygen from the air and delivering it to the tissues, while eliminating carbon dioxide from the body. It is related to cellular respiration, the biochemical processes that consume this oxygen and generate the carbon dioxide in the course of making adenosine triphosphate ( ATP ). Respiration in the former sense involves four processes:

(1) breathing, or ventilation of the lungs;

(2) gas exchange between

air and blood in the lungs;

(3) gas transport in the blood; and

(4) gas exchange between the blood and tissues

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PLZ MARK AS BRAINLIEST●●●

Answer 2

Provides O2 to cells for energy production

and removes CO2 from cells.

In animals, Respiration involves:

(i) breathing or ventilation which

happens in lungs, and

(ii) cellular respiration which occurs in

cells and produces energy from oxidation

of food.

Organs of respiration in fish are gills. In

humans – nostrils, trachea, bronchi, lungs.

Breathing happens by change in position of

ribs and diaphragm

Air moves from region of its high pressure to

its low pressure

At inspiration At expiration

O2 in air 20% 16%

CO2 in air 04% 4%

O2 enters blood and reaches cells

CO2 produced by cells goes out into blood and

from lungs out of body.Exchange of O2 and CO2 between alveoli and

blood.

In the cells, energy production by oxidation of

glucose occurs in mitochondria

Gas Exchange between alveoli and blood

capillaries

Air with more O2 breathed in

Reaches alveoli

High concentration of O2 in alveoli

High concentration of CO2 in tissues

The two gases exchanged between blood

brought from tissues and alveoli

In plants, oxygen enters through stomata of

leaves by diffusion. CO2 diffuses out of cells,

also through stomata.