Ribosomes are chemically composed of which of the following?
Correct answer: D. Both A and C
- A. Protein
- B. DNA
- C. RNA
- D. Both A and C
Explanation
Ribosomes are complex macromolecular structures composed of ribosomal RNA (rRNA) and proteins, forming a ribonucleoprotein complex. Option D is correct because it acknowledges both components. Options A and C are incorrect as they only account for one of the two components individually, and Option B is incorrect because DNA is not a component of ribosomes.
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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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