The distinguishing feature of prokaryotic cell is its:
Correct answer: A. Absence of nucleus
- A. Absence of nucleus
- B. Cell wall
- C. Ribosomes
- D. Cytoplasmic Streaming movement
Explanation
The distinguishing feature of prokaryotic cells is their absence of a nucleus, meaning that their genetic material is not enclosed within a membrane-bound structure. This contrasts with eukaryotic cells, which contain a well-defined nucleus that contains their DNA. The other options-cell wall, ribosomes, and cytoplasmic streaming-do not uniquely identify prokaryotic cells. For instance, while many prokaryotes have a cell wall, eukaryotic cells like plants also possess this feature. Similarly, ribosomes are found in both cell types, and cytoplasmic streaming is largely associated with the more complex eukaryotic cells.
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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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