Question

Write true or false:

1 Cellular respiration takes place in all the cells of living organisms.
2 All living organisms respire to get energy from food.
3 Our muscle cells do anaerobic respiration only when there is temporary deficiency of oxygen.
4. Breathing involves the movement of the diaphragm and the rib cage.
5 The percentage of carbon dioxide is higher in inhaled air in comparison to exhaled air.
6 We often feel hungry after a physical exercise.
7 Increased physical activity reduces the rate of breathing.

Answer 1

1. True
2. True
3. True
4. True
5. False (The percentage of carbon dioxide is higher in exhaled air in comparison to inhaled air.)
6. True
7. False (Increased physical activity increases the rate of breathing.)