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प्रश्न
Fill in the blank with a suitable word:
______ controls all the metabolic activities of the cell.
उत्तर
The nucleus controls all the metabolic activities of the cell.
APPEARS IN
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.
Write down differences between organ and organelle.
Differences between light microscope and electron microscope.
Try to find the names of four cell organells hidden in this maze, (hint: The hidden words can appear horizontally or vertically; forwards or backward or even mixed up). Write them in the lines provided. For example : “NUCLEUS” in the last row, seven backward letters.
| A | J | F | B | H | E | M | O | E | L | O | U | C | A | V |
| H | V | L | E | U | C | O | P | L | A | S | T | N | O | E |
| C | H | R | O | M | O | P | L | A | S | T | X | T | E | R |
| S | U | E | L | C | U | N | W | P | L | A | S | T | I | D |
Write a short answer.
Why are mitochondria called the powerhouse of the cell?
Name any five cell organelles.
What was the contribution of the following to our knowledge of cells?
Robert Hooke
Which is the smallest cell?
Name the different organelles in a cell?
