Question

4. Which of the following is known as the energy currency of the cells in biology ?
(a) RNA
(b) DNA
(C) ATP
(d) ADP.
5. When air is blown from mouth into a test tube containing lime water, the lime water turned milky due to the presence
of :
(a) Oxygen
(b) Carbon dioxide (C) Nitrogen
(d) Water vapour.
6. Which of the following increases in the muscle cells when they are not getting sufficient oxygen ?
(a) Carbon dioxide (b) Lactose
(c) Lactic acid
(d) Uric acid.
7. Which of the following is not produced during anaerobic respiration ?
(a) Ethanol
(b) Water
(c) Carbon dioxide (d) ATP.
8. Fermentation takes place in :
(a) Yeast
(b) Aerobic bacteria (c) Mitochondria
(d) Lenticels.
9. Internal respiration may be defined as:
(a) Breathing in and releasing oxygen in the tissue.
(b) The oxidation of food substance to release energy.
(c) The building up (synthesis) of complex substance.
(d) Getting rid of carbon dioxide that would accumulate in the tissues.
10. Respiration in roots, stems and leaves occurs by the process of :
(a) Transpiration (b) Diffusion
(C) Osmosis
(d) Translocation.​

Answer 1

Answer:

4. c atp

5. b co2

6. c lactic acid

7. d atp

8. b aerobic bacteria

9. b oxidation of food

10. b diffusion

hope it will help you

Answer 2

Answer:

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Explanation:

4. (d)

5.(b)

6.(b)

7.(d)

8.(a)

9.(a)

10.(a)