Site of mRNA translation:
Correct answer: B. Ribosomes
- A. Lysosomes
- B. Ribosomes
- C. Cisternae
- D. Golgi body
Explanation
Factual recall; Option A mentions lysosomes, which contain hydrolytic enzymes that digest old organelles or phagocytosed particles. Option B mentions ribosomes; messenger RNA (mRNA) is decoded in a ribosome, outside the nucleus, to produce a specific amino acid chain or polypeptide. Option C, cisternae, describes the sac-like tubules that make up the endoplasmic reticulum. Option D, Golgi body, is involved in packaging of already synthesized proteins and their subsequent transport or secretion.
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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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