Which among the following statements is incorrect about plasma membran...
Plasma membrane is a selectively permeable membrane and allows only those particles that protect the cell. Movement of air and water takes place through diffusion and osmosis respectively. Osmosis and diffusion are examples of passive transport. Active transport takes place through use of energy.
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Which among the following statements is incorrect about plasma membran...
Incorrect Statement about Plasma Membrane:
Explanation:
Definition of Plasma Membrane:
The plasma membrane is a semi-permeable membrane that surrounds the cell and controls the movement of substances in and out of the cell.
Correct Statements:
1. The plasma membrane is a selectively permeable membrane and allows only those particles that protect the cell.
2. Movement of air and water takes place through diffusion and osmosis respectively.
3. Active transport takes place through the use of energy.
Incorrect Statement:
Osmosis and diffusion are examples of active transport.
Explanation:
- Osmosis and diffusion are passive processes that do not require energy input from the cell. Diffusion is the movement of particles from an area of high concentration to an area of low concentration, while osmosis is the diffusion of water across a selectively permeable membrane.
- Active transport, on the other hand, is the movement of particles against their concentration gradient, requiring energy in the form of ATP. This process allows the cell to take up essential nutrients or expel waste substances.
In conclusion, osmosis and diffusion are examples of passive transport, while active transport requires energy expenditure by the cell.