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प्रश्न
State the difference between eukaryotes and prokaryotes
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उत्तर
| Prokaryotes | Eukaryotes |
| Most prokaryotes are unicellular | Most eukaryotes are multicellular |
| The nucleus is poorly defined due to the absence of a nuclear membrane | The nucleus is well defined and is surrounded by a nuclear membrane |
| Nucleolus is absent | Nucleolus is present |
| Cell organelles such as plastids, mitochondria, golgi bodies, etc. are absent | Cell organelles such as plastids, mitochondria, golgi bodies, etc. are present |
| Bacteria and blue-green algae are prokaryotic cells | Fungi, plant, and animal cells are eukaryotic cells |
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
A plant cell has a cell wall made of :
Fill up the blank with the terms given below
All cells arise from ______ cells
What is cell theory? Name the three scientists whose work led to the formulation of the cell theory.
Who studied the cell first?
the question has four options. Choose the correct answer:
Mitochondria were first seen by
I take part in food production of a cell. Who am I? ____
New cells are produced from the existing cells.
Matching:
| 1. | Discovery of cell | a. | Nerve cell |
| 2. | Unicellular organism | b. | spirogyra |
| 3. | Multicellular organism | c. | Robert Hooke |
| 4. | Longest cell | d. | Cyanobacteria |
| 5. | Prokaryotic cell | e. | Amoeba |
