After exercise, heart rate stays high to

  1. carry lactic acid to the liver
  2. make more lactic acid
  3. cool the muscles
  4. reduce breathing
Answer

A) carry lactic acid to the liver

Blood transports lactic acid to the liver. O Level Biology · Topic 10 Respiration · 10.3 Anaerobic respiration

Biology MCQ · More O Level Biology: Respiration MCQs · Practise