question_answer 29)

  Which cell organelle plays a crucial role in detoxifying many poisons and drugs in a cell? (a) Golgi apparatus                                                          (b) Lysosomes (c) Smooth endoplasmic reticulum                           (d) Vacuoles

Answer:

  (c) Smooth endoplasmic reticulum in liver cells of vertebrates helps in detoxification. It metabolizes various toxic or poisonous substances such as drugs, aspirin, insecticides (DDT), petroleum products and pollutants. These toxic substances make their entry in animal's body through food, air or water.