1 Name the molecules which contribute to the flexibility
exhibited by the plasma membrane.
2 Why plasma membrane is called selectively permeable
membrane?
3 Name the process by which CO, is removed from the cell.
4 Apart from gaseous exchange, how is diffusion important
for organisms?
5 Which component of plant cell provides the structural
strength to it?
Answers
Answer:
1. The cell membrane is primarily composed of:
•Proteins
•lipids
=>lipids help to give membranes their flexibility
=>proteins monitor and maintain the cell's chemical climate and assist in the transfer of molecules across the membrane.
2 Plasma membrane allows some material to pass through it while on the same time it blocks other material from entering through it… In other words its selects materials that can enter the cell… that`s the reason it is called as selectively permeable membrane.
3 diffusion helps in removing CO2
4 Diffusion is an essential function in living organisms. Diffusion is the random but directional movement of molecules from a place of high concentration to a place of low concentration. This simple concept describes the process by which cells exchange toxic gases for life-sustaining gases.
5 cell wall is the component of plant cells provide the structural strength to it.
Explanation:
Answer:
1. Proteins and Lipids.
2. Because Plama Membrane allows some material to pass through it while on the same time it blocks other material from entering through it.
3. By diffusion.
4. Diffusion is important to organism because it is the process by which useful molecules enter the body cells and waste products are removed.
5. Cell wall is the component of plant cell that provides the structural strength to it.
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