1. Why does an athlete breathe faster and deeper than usual after
finishing the race?
2. List the similarities and differences between aerobic and anaerobie
respiration.
3. Why do we often sneeze when we inhale a lot of dust-laden air?
answer fast
Answers
⭐️Answer⭐️
Ans 1) During the run, the demand for energy is high but the supply of oxygen to produce energy is limited. Therefore, anaerobic respiration takes places in the muscles cells to fulfil the demand for energy. Thus An athlete needs to supply extra energy to his muscle cells which have worked hard during running. Hence after finishing the race, an athlete breathes faster and deeper than usual so that more oxygen is supplied to the cells.
Ans 2)
SIMILARITIES
1) They both use glucose as the starting molecule.
2) Food is oxidized in both cases and energy is released.
3) Both take place inside cells.
4) Both produce byproducts.
5) Carbon dioxide is produced in both reactions.
DIFFERENCES
1) Aerobic respiration takes place in presence of oxygen; whereas anaerobic respiration takes place in absence of oxygen.
2) Carbon dioxide and water are the end products of aerobic respiration, while alcohol is the end product of anaerobic respiration.
3) Aerobic respiration releases more energy than anaerobic respiration.
Ans 3) When we inhale air containing dust particles, the particles get trapped in the hair present in nostrils. Sometimes, these particles may pass through the hair and enter the nasal cavity. They irritate the mucus lining of the nasal cavity, and as a result we sneeze.