Question

3. What are the two steps involved in respiration?​

Answer 1

The steps involved in respiration are as follows:

Pulmonary ventilation or breathing through which atmospheric air is drawn in and carbon dioxide-rich air is given out.

Diffusion of gases across the alveolar membrane.

Gaseous transport by the blood.

Diffusion of carbon dioxide and oxygen between tissues and blood.

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Answer 2

●Cellular respiration occurs in three stages: glycolysis, the Krebs cycle, and electron transport. Glycolysis is an anaerobic process. The other two stages are aerobic processes. The products of cellular respiration are needed for photosynthesis, and vice versa.