Multiple choice

Which of the following does not have DNA?

  1. Peroxisome

  2. Chloroplast

  3. Nucleus

  4. Mitochondria
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A Correct answer
Explanation

Peroxisomes are membrane-bound organelles that contain enzymes for oxidation reactions, particularly breaking down fatty acids and detoxifying harmful substances. Unlike mitochondria and chloroplasts, peroxisomes do not contain DNA or ribosomes. They are believed to have evolved from the endoplasmic reticulum and cannot replicate independently - they must be synthesized by the cell. Mitochondria, chloroplasts, and nuclei all contain their own DNA.

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