Question

multiple choice question
oxygen debt refers to a high level of _____, and low levels of _____.
o oxygen; carbon dioxide
o lactic acid; creatine phosphate
o creatine phosphate; lactic acid

Explanation:

Oxygen debt occurs during intense exercise when anaerobic respiration dominates. Anaerobic respiration produces lactic acid, increasing its levels. Creatine phosphate is used up quickly during the initial stages of high - intensity exercise, leading to low levels.

Answer:

B. lactic acid; creatine phosphate