Question

altitude training increases the amount of oxygen in the blood. with everything you have learned about cellular respiration, can you explain why this helps athletes performance?
a) with the extra oxygen, aerobic respiration can go on for longer
b) if more oxygen goes into aerobic respiration, more atp is produced
c) the extra oxygen inhibits anaerobic respiration
d) oxygen helps the athletes recover more quickly

Explanation:

1. Option a: Aerobic respiration relies on oxygen to produce energy. More blood oxygen means this efficient energy pathway can continue longer before the body switches to anaerobic respiration, delaying fatigue.
2. Option b: Aerobic cellular respiration produces far more ATP (the cell's energy currency) per glucose molecule than anaerobic respiration. Increased oxygen allows more aerobic respiration, generating more ATP to power muscle contractions during athletic performance.
3. Option c: Higher oxygen availability maintains aerobic conditions in cells, preventing the shift to anaerobic respiration (which only occurs when oxygen is limited). This avoids the buildup of lactic acid, which causes muscle fatigue and soreness.
4. Option d: Extra oxygen supports faster post-exercise recovery by aiding in the breakdown of lactic acid, replenishing energy stores like glycogen, and repairing muscle tissue more efficiently.

Answer:

a) With the extra oxygen, aerobic respiration can go on for longer
b) If more oxygen goes into aerobic respiration, more ATP is produced
c) The extra oxygen inhibits anaerobic respiration
d) Oxygen helps the athletes recover more quickly