By using phase contrast microscope_______________?
Correct answer: A. Internal structures are differentiated in living cells
- A. Internal structures are differentiated in living cells
- B. Internal structures are differentiated in dead cells
- C. Internal metabolic activities can be observed
- D. External capsule formation can be observed
Explanation
Phase-contrast microscopy converts small differences in refractive index into contrast, allowing internal structures of living, unstained cells to be seen. It does not directly identify metabolic reactions or specifically demonstrate capsules.
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