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प्रश्न
What was the contribution of the following to our knowledge of cells?
Schwann
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उत्तर
Schwann observed that all animal cells are basically similar and lack cell wall.
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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.
Write a short answer.
Why is a cell called the structural unit of a living organism?
Fill in the blank with a suitable word:
______ controls all the metabolic activities of the cell.
Name the longest cell.
the question has four options. Choose the correct answer:
The word cell was given by
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.
Answer the following question.
Who discovered cells, and how?
Write about the contribution of Robert Hooke in cell biology.
Robert Hooke saw many objects like Butterfly’s compound eyes, Bee’s wings, etc.
