A Levels Biology (9700)•9700/12/O/N/19
Explanation
Eukaryotic Cell Features
Steps:
- Recall that eukaryotes have membrane-bound organelles like nucleus and mitochondria, unlike prokaryotes.
- Identify feature 1 as nucleus, present in all eukaryotes.
- Identify feature 2 as endoplasmic reticulum, a eukaryotic organelle for protein synthesis.
- Identify feature 3 as Golgi apparatus, involved in modifying proteins in eukaryotes.
- Confirm feature 4 as 70S ribosomes or circular DNA, typical of prokaryotes.
Why A is correct:
- Eukaryotes are defined by having a nucleus and membrane-bound organelles (features 1, 2, 3), per cell theory distinctions.
Why the others are wrong:
- B includes prokaryotic feature 4, excluding eukaryotic 2 and 3.
- C pairs eukaryotic 3 with prokaryotic 4, omitting 1 and 2.
- D combines prokaryotic 4 with eukaryotic 2, excluding 1 and 3.
Final answer: A
Topic: Cells as the basic units of living organisms
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