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Question
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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Solution
Cell membrane
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RELATED QUESTIONS
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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Describe the structure of the chromosome in brief.
Fill in the blank with a suitable word:
The single-celled alga ______ measures 10 cm in length.
Which is the longest human cell?
Write about the contribution of Robert Hooke in cell biology.
