Ribosomes exist in two forms in eukaryotic cells, i.e.:
Correct answer: B. Freely scattered in cytoplasm and attached with RER
- A. Freely scattered in cytoplasm and attached with SER
- B. Freely scattered in cytoplasm and attached with RER
- C. Freely scattered in nucleoplasm and attached with RER
- D. Freely scattered in nucleoplasm and attached with SER
Explanation
Ribosomes are critical for protein synthesis in eukaryotic cells. They are found in two main locations: freely scattered in the cytoplasm and attached to the rough endoplasmic reticulum (RER). The RER is termed 'rough' due to the presence of ribosomes on its surface. The smooth endoplasmic reticulum (SER) does not have ribosomes attached. Thus, the correct answer is freely scattered in cytoplasm and attached with RER. Options involving the nucleoplasm or SER are incorrect as ribosomes are not found in those locations.
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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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