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प्रश्न
Name the part of the cell concerned with the following :
The entry of only certain substances into and out of the cell.
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उत्तर
Cell membrane
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.
Write short notes on the following.
Nucleus of a cell
Differences between light microscope and electron microscope.
Name the part of the cell concerned with the following :
Transmission of hereditary characters from parents to offspring
Who coined the term “cell” ?
Write a short answer.
Why are mitochondria called the powerhouse of the cell?
What is cell theory? Name the three scientists whose work led to the formulation of the cell theory.
What is the function of the following?
Cell membrane
An electron microscope is necessary for the study of ______.
When will you use a simple microscope and when, a compound microscope? Explain in detail how you will use them.
