The process of bringing oxygenated air into contact with a gas exchange surface is:
Correct answer: A. Ventilation
- A. Ventilation
- B. Gas transport
- C. Photorespiration
- D. Respiration
Explanation
Ventilation refers to the process of bringing oxygenated air into contact with a gas exchange surface, such as the lungs in humans or the gills in fish. It involves the movement of air or water over the gas exchange surface to facilitate the exchange of oxygen and carbon dioxide.
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About Digestion
The human digestive system covers the organs from mouth to anus, the movement of food, and the mechanical and chemical breakdown of carbohydrates, proteins and fats. It also includes the roles of digestive enzymes, bile, absorption through intestinal villi, and the assimilation of nutrients by body cells.
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