MDCAT Biology MCQ #1678

During cellular metabolism, toxic hydrogen peroxide is produced. Which organelle protects the cell by using catalase to convert this toxin into water and oxygen?

MDCAT Biology MCQ #1678

  1. Question 1

    Q1. During cellular metabolism, toxic hydrogen peroxide is produced. Which organelle protects the cell by using catalase to convert this toxin into water and oxygen?

    • A) Lysosomes
    • B) Glyoxysomes
    • C) Peroxisomes
    • D) Mitochondria

    Answer: Peroxisomes

    Explanation: Peroxisomes contain catalase to break down toxic H2O2. Glyoxysomes are tempting but they are specialized for lipid-to-sugar conversion in germinating seeds.