Advertisements
Advertisements
प्रश्न
Differences between light microscope and electron microscope.
Advertisements
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. |
APPEARS IN
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.
Name the scientist who invented the first microscope.
What is cell theory? Name the three scientists whose work led to the formulation of the cell theory.
What was the contribution of the following to our knowledge of cells?
Virchow
Fill in the blank with a suitable word:
Cell ______ was proposed by Schleiden and Schwann.
Which is the longest human cell?
the question has four options. Choose the correct answer:
The word cell was given by
Name the different organelles in a cell?
Make sketches of animal and plant cells which you observe under microscope.
