Question

10. Name IWO TOTID URV
What is the effect of hypertonic solution on human RBCs.?
By which process Amoebe engulfs the food particles.
what is the most acceted model of structure of plasma membrane?
14. Give the chemical nature of plasma membrane.
15 Why is plasma membrane called a differentially permeable?
16. What is cyclosis?
17. What is the primary function of plasma membrane?
18. List the functions of cell wall.
19. Who proposed the cell theory?
20. What do you mean by plasmolysis?
21. Name two types of endocytosis.
22. Which molecules help in active transport through plasma membrane?
23. Name two process involved in passive transport of biomolecules.
24. State one difference between diffusion and osmosis.
25. Give the chemical nature of plasma membrane and cell wall of plant cell.
26. Name the structure that maintains identical chromatids bound.
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Answer 1

Answer:

10. The RBC will shrink.

Endocytosis

Phospholipid bilayer (formed by lipids and proteins)

14.It is selectively-permeable (allows certain substances to enter/exit)

15.Because it allows certain materials to move through but not others

16. 'Cyclosis' is the movement/flowing of the cytoplasm which allows substances to move from one part of the cell to another.

17. The primary function of the plasma membrane is to separate the inner substances of the cell from its environment and to protect it from pathogens.

18. a) Provides rigidity to the plant cell.

    b)Protects it from harsh environmental factors

19. Rudolf Virchow gave the cell theory, which was extended by Schleiden and Schwaan

20. The shrinking away of the protoplasm (living content) of a plant cell away from its cell wall

21. Pinocytosis (of water) and phagocytosis (of food particles)

22.Na+ and K- ions

23. Diffusion and osmosis

24. Diffusion- movement of particle from region of their higher concentration to a region of their lower concentration.

Osmosis- Movement of water molecules from a region of their higher concentration to a region of their lower concentration THROUGH A SEMI-PERMEABLE MEMBRANE

25. CELL WALL- disputed if it is semi-permeable or selectively-permeable

CELL-MEMBRANE- selectively-permeable

26. A chromosome is a condensed bond of chromatids, and it is wound around histone proteins during cell division

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