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प्रश्न
What is the name of the chemical substance which constitutes the genes?
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उत्तर
DNA (Deoxyribonucleic acid)
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संबंधित प्रश्न
Who discovered cells and how?
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.
State the difference between eukaryotes and prokaryotes
Give a brief account of discovery of the cell.
The cell organelle that helps in the respiration of the cell is :
Write true or false for each statement. Rewrite the false statements correctly:
The size of a cell is usually measured in centimetres
Write true or false for each statement. Rewrite the false statements correctly:
Growth and reproduction are based on cell division
Name any five cell organelles.
What was the contribution of the following to our knowledge of cells?
Virchow
Robert Hooke published a book named ______ in the year 1665.
