Aerobic Respiration in Resting Muscles

Steps:

• Before a race, athlete's muscles are at rest with ample oxygen available.
• This enables aerobic respiration, which uses oxygen to break down glucose fully.
• The standard equation for aerobic respiration is glucose + oxygen → carbon dioxide + water.
• Match this to option D, eliminating anaerobic processes.

Why D is correct:

• It matches the aerobic respiration equation, where glucose is oxidized with oxygen to release energy, producing CO₂ and H₂O as byproducts.

Why the others are wrong:

• A: Describes photosynthesis, the reverse process in plants using light energy.
• B: Represents alcoholic fermentation in yeast under anaerobic conditions.
• C: Shows lactic acid fermentation, which occurs in muscles during intense anaerobic exercise like mid-race.

Final answer: D