A Levels Biology (9700)•9700/13/M/J/22

Explanation
Matching cell functions to organelle appearances
Steps:
- Function 1 (protein synthesis by ribosomes) matches non-membrane-bound spherical structures (X), as ribosomes lack membranes and appear granular/spherical.
- Function 2 (polypeptide synthesis by ribosomes) also matches X, since ribosomes perform both syntheses and share the same appearance.
- Function 3 (packaging hydrolytic enzymes in cell) matches membrane-bound structures with inner cavity (V), as lysosomes are membrane-enclosed vesicles.
- Correct matching is 1-X, 2-X, 3-V; choice C provides this alignment.
Why C is correct:
- C pairs ribosomal functions to X (non-membrane-bound ribosomes) and lysosomal function to V (membrane-bound lysosomes), per standard cell biology definitions.
Why the others are wrong:
- A: Assigns 1 to V (membranes incorrect for ribosomes) and 3 to Y (cylindrical wrong for lysosomes).
- B: Uses undefined W/Z; 1 to V mismatches ribosomes.
- D: Uses undefined Z/W; 2 to Z and 3 to W likely mismatch ribosomal/lysosomal appearances.
Not enough information for full choice details, but C fits known structures.
Final answer: C
Topic: Cells as the basic units of living organisms
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