Discussion
Match the following between organelle or cellular components of a bacterium cell in Group I with the constituents and functionalities in Group II.
| Group I | Group II |
|---|---|
| P) Cytoplasmic membrane | 1) Protein synthesis |
| Q) Flagellum | 2) Peptidoglycan |
| R) Cell wall | 3) Phospholipid bilayer |
| S) Ribosome | 4) Motility of cell |
Answer: C
The match is P-3, Q-4, R-2, S-1.
- The cytoplasmic membrane is a phospholipid bilayer with embedded proteins.
- The flagellum is the organ of motility, rotated by a motor in the cell envelope.
- The bacterial cell wall is made of peptidoglycan (murein), thick in Gram-positive and thin in Gram-negative bacteria.
- Ribosomes (70S in bacteria) carry out protein synthesis.
The other options swap these, for example giving the flagellum peptidoglycan or the cell wall motility, which are wrong.
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