Question

look at the levels of lactic acid on the screen. why are they increasing?
a) using energy from atp produces lactic acid during exercise
b) the players are running out of glucose
c) the players are producing a lot of lactic acid through aerobic respiration
d) the players are exercising so hard that anaerobic respiration produces a lot of lactic acid

Explanation:

• Option a is incorrect: ATP use does not produce lactic acid; ATP is the energy currency used in exercise.
• Option b is incorrect: Lactic acid buildup is not caused by running out of glucose, but by insufficient oxygen for aerobic respiration while glucose is still being broken down.
• Option c is incorrect: Aerobic respiration produces carbon dioxide and water, not lactic acid.
• Option d is correct: Intense exercise leads to oxygen shortage, so cells switch to anaerobic respiration, which breaks down glucose into lactic acid to produce small amounts of ATP, causing lactic acid levels to rise.

Answer:

d) The players are exercising so hard that anaerobic respiration produces a lot of lactic acid