Which organelle is bounded by two membranes?
Correct answer: B. Mitochondria
- A. Ribosome
- B. Mitochondria
- C. Lysosome
- D. Nucleolus
Explanation
The mitochondria are known for their double-membrane structure which is essential for their role in energy production. The outer membrane is smooth, while the inner membrane is highly folded to form structures called cristae which increase surface area for ATP production. This distinguishes them from other organelles like lysosomes, which have a single membrane, and ribosomes and the nucleolus, which are non-membranous.
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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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