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Biology CBSE Live product
Class 9 (2025-26)
The fundamental unit of life
Cell components
3.
Plasma membrane
Question:
2
m.
Choose the best answer:
1
.
Which of the following is true about diffusion?
It occurs from a region of lower concentration to higher concentration
It is essential for exchange of gases in the respiratory system
It always requires ATP
It takes place only in plants
2
.
Which of the following is not a function of the plasma membrane?
Regulating the movement of molecules across the membrane
Engulfing food materials by endocytosis
Communicating with the external environment
Synthesizing proteins for the cell
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