WAEC Biology 2012 Objective — Question 7

The muscle cell fluid of an athlete was tested immediately after a 100m race and was found to contain a high concentration of lactic acid. Explain what could have caused this.

• A. The athlete must have eaten food containing lactic acid just before the race
• B. The athlete must have injected lactic acid into his blood just before the race
• C. The athlete's muscle cell must have carried out anaerobic respiration during the raceCorrect
• D. The athlete must have inhaled lactic acid from the environment during the race