Very Short Answer Type Questions
A group of cells performing similar functions are known by a specific term.
what is it?
2 The fundamental unit of life is cell. Comment.
3 Amoeba can attain the shape of Paramecium. Can Paramecium attain the shape of Amoeba
4.the largest floating body is generally in the centre of a cell. Give its name.
5 Which is the largest cell in human body?
6 Write functions of cell membrane.
7. Write the name of control centre of cell.
8. Why does a red blood cell not reproduce?
Answers
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Answer:
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Explanation:
1.
ans:-Tissue
2.
ans:- Cell is called the fundamental unit of life. ... Unicellular organisms are capable of independent existence which shows a cell's capability to exist independently. Due to this, a cell is called the fundamental and structural unit of life. All living beings are composed of the basic unit of life, i.e. cell.
3.
ans:- The paramecium cannot change its shape like the amoeba can because the paramecium is surrounded by a 'pellicle.
4.
ans:- The largest floating body generally in the center of a cell is the nucleus.
5.
ans:- The largest cell is ovum in the human body.
6.
ans:- The cell membrane, therefore, has two functions:
1) To be a barrier keeping the constituents of the cell in and unwanted substances out.
2)To be a gate allowing transport into the cell of essential nutrients and movement from the cell of waste products.
7.
ans:- The nucleus is the membrane bound important structure of the cell.
8.
ans:- Because of the lack of nuclei and organelles, mature red blood cells do not contain DNA and cannot synthesize any RNA, and consequently cannot divide and have limited repair capabilities. The inability to carry out protein synthesis means that no virus can evolve to target mammalian red blood cells.
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