Question

Exercises
finishing the race?
2. List the similarities and differences between aerobic and anaerobic
respiration.
3. Why do we often sneeze when we inhale a lot of dust-laden air?
4. Take three test-tubes. Fill 4th of each with water. Label them A, B and
C. Keep a snail in test-tube A, a water plant in test-tube B and in c.
keep snail and plant both. Which test-tube would have the highest
concentration of CO,?
1. Why does an athlete breathe faster and deeper than usual after​

Answer 1

Answer:

a)An athlete consumes a lot of energy during running which is produced by oxidation of glucose. By breathing deeper and faster, the athlete is basically consuming more and more oxygen to meet his or her energy requirements.

b)Aerobic Respiration

Anaerobic Respiration

It happens in the presence of oxygen.

It happens in the absence of oxygen.

Main products are CO2 and H2O

The end products can be CO2,Lactic acid and alcohol.

Large amount of energy is produced.

Small amount of energy is produced as compared to aerobic respiration.

c)By sneezing, our body tries to expel the dust particles from the air we inhaled so that only clean air enters our body.

d)The concentration of CO2 will be highest in test-tube A because snail takes oxygen and breathes out carbon dioxide. Whereas, plants take CO2 and produce oxygen.

Explanation:

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Answer 2

Aerobic respiration occurs in the presence of oxygen

Anaerobic respiration occurs in absence of oxygen