1. Which gas is mainly used during respiration?
2. What is the process of breaking down food to release energy called?
3. Which organ in humans is responsible for breathing?
4. The energy produced during respiration is stored in the form of:
5. Which of the following organisms breathe through moist skin?
6. Which structure helps fish to breathe?
7. Which type of respiration uses oxygen?
8. Anaerobic respiration occurs in:
9. What is released during anaerobic respiration in muscles?
10. Which of the following shows breathing movement?
11. In which part of the cell does aerobic respiration take place?
12. The air we breathe in contains:
13. Which gas is exhaled during respiration?
14. Which of these does not breathe through lungs?
15. Yeast respires anaerobically and produces:
16. Breathing rate increases when:
17. The tiny air sacs in lungs are called:
18. Which part of the plant respires?
19. Plants exchange gases through:
20. Insects breathe through:
21. The process of inhaling and exhaling is called:
22. The muscular sheet that helps in breathing is called:
23. Which gas is essential for cellular respiration?
24. What do animals exhale as a waste gas?
25. During vigorous exercise, muscles perform:
26. In anaerobic respiration, the end product in humans is:
27. Exchange of gases in humans occurs in the:
28. Which structure connects the throat to the lungs?
29. Which of the following organisms respires through skin and lungs?
30. Respiration releases:
31. Respiration occurs in:
32. What is the function of nostrils?
33. Which of these is not involved in respiration?
34. What causes the movement of air into the lungs?
35. Breathing through mouth instead of nose can lead to:
36. Which of these respires through tracheae?
37. How many lungs does a human have?
38. The breathing rate is measured in:
39. Which gas is not used in respiration?
40. The main purpose of respiration is to: