Question

describe the journey made by a molecule of carbon dioxide after its production by respiration in a body cell, to the moment it enters the air in the lungs

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Answer 1

Answer:

The oxygen-rich blood returns to the heart. ... While oxygen moves from the capillaries and into body cells, carbon dioxide moves from the cells into the capillaries. Carbon dioxide is brought, through the blood, back to the heart and then to the lungs. Then it is released into the air during exhalation

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Answer 2

Answer:

Explanation:1 correct reference to (CO2) diffusion ;

2 cytoplasm ;

3 (across) cell membrane ;

4 tissue fluid ;

5 * capillary ;

6 plasma / (red) blood (cell) ;

7 vein / vena cava ;

8 heart + right (side of heart) ;

9 reference to atrium / auricle + followed by ventricle ;

10 pulmonary artery / arch ;

11 * capillary ;

12 alveolus / alveoli ;