The presence of which of the following feature would best indicate a eukaryotic cell?
Correct answer: B. Membrane bound organelles
- A. Cilia
- B. Membrane bound organelles
- C. Plasma membrane
- D. Ribosomes
Explanation
Option B is correct since eukaryotic cells always possess organelles that are membrane-bound. Option A is incorrect since only some eukaryotic cells may possess motile or nonmotile cilia. Therefore, cilia is not a necessary feature of all eukaryotic cells. Option C is incorrect since all prokaryotic cells also possess a plasma membrane. While the plasma membrane is a major component of all eukaryotic cells, the presence of a membrane in prokaryotes makes it difficult to differentiate between the two cells based on the cell membrane. Option D is incorrect since ribosomes are found in both prokaryotic and eukaryotic cells. In eukaryotes, 80S ribosomes are present while in prokaryotes, 70S ribosomes are present.
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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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