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Which of these structures is found in eukaryotic but not prokaryotic cells? A - OCR Gateway - GCSE Biology - Question 6 - 2018 - Paper 1
Question 6
Which of these structures is found in eukaryotic but not prokaryotic cells? A. Cell wall B. Cytoplasm C. Nucleus D. Plasmid
Worked Solution & Example Answer:Which of these structures is found in eukaryotic but not prokaryotic cells? A - OCR Gateway - GCSE Biology - Question 6 - 2018 - Paper 1
Step 1
C. Nucleus
Answer
The question asks for a structure that is present in eukaryotic cells but absent in prokaryotic cells. Among the options provided:
- Cell wall: This structure can be found in many prokaryotic cells, such as bacteria, as well as in plant cells, hence it does not fit the criteria.
- Cytoplasm: This is a universal feature found in both eukaryotic and prokaryotic cells, so it does not qualify as the correct answer.
- Nucleus: Eukaryotic cells have a membrane-bound nucleus that contains their genetic material, while prokaryotic cells lack a defined nucleus. Thus, the nucleus is specific to eukaryotic cells.
- Plasmid: Plasmids are typically found in prokaryotic cells (e.g., bacteria) as extra-chromosomal DNA and are not a structure unique to eukaryotes.
Therefore, the correct answer is C. Nucleus.