Which of the following cell organelle does not contain DNA?
Correct answer: C. Lysosomes
- A. Nucleus
- B. Mitochondria
- C. Lysosomes
- D. Chloroplast
Explanation
The correct answer is Lysosomes. Lysosomes are specialized for the breakdown and recycling of cellular waste through enzymatic reactions and do not require DNA for this purpose. In contrast, the nucleus contains the cell's primary genetic material as linear DNA, which is essential for overall cellular control and function. Mitochondria and chloroplasts both contain circular DNA, which is crucial for their specific roles in energy production and photosynthesis, respectively. These organelles are thought to have originated from ancestral prokaryotic cells, which explains their possession of DNA.
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About Cell Structure and Function
Animal, plant, prokaryotic and eukaryotic cells are compared through their membranes, cell walls, nuclei and cytoplasmic organelles. The work includes the structures and functions of mitochondria, chloroplasts, ribosomes, endoplasmic reticulum, Golgi apparatus and lysosomes, as well as chromosome organization and the distinction between chromatin and chromosomes.
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