Our ncert solutions for Solutions 5. The Fundamental Unit of Life - Additional -Questions | Class 9 Science - Toppers Study is the best material for English Medium students cbse board and other state boards students.
Solutions 5. The Fundamental Unit of Life - Additional -Questions | Class 9 Science - Toppers Study
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Solutions 5. The Fundamental Unit of Life - Additional -Questions | Class 9 Science - Toppers Study
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Chapter 5 Science class 9
Additional -Questions class 9 Science Chapter 5. The Fundamental Unit of Life
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- Solutions 5. The Fundamental Unit Of Life - Additional -Questions | Class 9 Science - Toppers Study
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5. The Fundamental Unit of Life
| Additional -Questions |
Solutions 5. The Fundamental Unit of Life - Additional -Questions | Class 9 Science - Toppers Study
Nucleus – Nucleus is a largest cell organelle which consists inside the cell. Nuclei are found in all eukaryotic cells. It contains chromatin.
Cytoplasm –
Ribosomes : They are extremely small round bodies present either in free state in the cytoplasm.
Functions :
- it is responsible for synthesis of proteins from amino-acid.
- They provide a surface for bio-chemical activities of the cell.
Q – Distinguish between plant and animal cell.
A –
Plant cell |
Animal cell |
|
|
Q – write the differences between prokaryotic cell and Eukaryotic cell.
prokaryotic cell |
Eukaryotic cell |
|
|
Q – How does an Amoeba obtain its food?
A – Amoeba obtains its food by the process of endocytosis, in which it take food from outside by the help of its body surface. It encloses the food by plasma membrane. It engulfs the food and digest it.
Q – Why is plasma membrane is called selectivity permeable membrane?
A – The plasma membrane allows or permits the entry and exit of some material in and out of the cell, therefore it is called a selectivity permeable membrane.
Q – What is Osmosis?
A – Water also obeys the law of diffusion. The movement of water molecules through such a selectively permeable membrane is called Osmosis.
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