Question

20.What is the significance of the membranes in a living cell?

21.How RER and SER support membrane biogenesis? 22.Write the functions of the following in a cell
a. Endoplasmic reticulum
b. Golgi Apparatus
23.Why are lysosomes called suicide bags of the cell?
24.If organization of the cell is disturbed due to physical or chemical influence, what will
happen?
25.What will happen to the life of a cell if there are no golgi apparatus in a cell? 26.Which organelle is called powerhouse of the cell and why?
27.Where do proteins and lipids constituting the membrane gets synthesized ? 28.How does amoeba obtain its food?
29.How is a plant cell different from an animal cell?
30.Name two cell organelles found only in animal cells.

31.If you are provided with some vegetables to cook, you generally add salt into vegetables during cooking process. After adding salt, vegetables release water. What mechanism is responsible for this?
32.If lysosomes are absent in a cell, then toxic waste materials accumulate in a cell. Why is it so? Mention any other function of lysosomes.
33.If plant cells are devoid of vacuoles the how would the shape of cell be affected and why?

Answer 1

Answer:

20. The cell membrane is selectively permeable to ions and organic molecules and controls the movement of substances in and out of cells. The basic function of the cell membrane is to protect the cell from its surroundings. It consists of the phospholipid bilayer with embedded proteins.

Answer 2

Answer:

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