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प्रश्न
Differences between light microscope and electron microscope.
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उत्तर
| Light microscope | Electron microscope |
| 1. It uses glass lenses | 1. It uses electromagnets. |
| 2. It uses a beam of light to illuminate the object. | 2. It uses a beam of electrons instead of light |
| 3. Internal vacuum is not required. | 3. Internal vacuum is essential. |
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संबंधित प्रश्न
Carry out the following osmosis experiment:
Take four peeled potato halves and scoop each one out to make potato cups. One of these potato cups should be made from a boiled potato. Put each potato cup in a trough containing water. Now,
- Keep cup A empty
- Put one teaspoon of sugar in cup B
- Put one teaspoon salt in cup C
- Put one teaspoon sugar in the boiled potato cup D.
Keep these for two hours. Then, observe the four potato cups and answer the following:
- Explain why water gathers in the hollowed portion of B and C.
- Why is potato A necessary for this experiment?
- Explain why water does not gather in the hollowed-out portions of A and D.
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Under the microscope, Priya observes a cell that has a cell wall and distinct nucleus. The cell that she observed is
The Term “ cell” was coined by ______
Make sketches of animal and plant cells which you observe under microscope.
Robert Hooke published a book named ______ in the year 1665.
