Question

Name the substances that are generally turned out of the cell through cell membrane

Answer 1

A cell membrane is a semipermeable membrane covering the cytoplasm of the cell.

There are two substances, namely Nonpolar and Small polar molecules that can travel through the cell membrane.

This happens because of the diffusion that occurs due to the concentration gradients.

Thus, carbon dioxide and oxygen are two substances that are turned out of the cell through the cell membrane.

This process of diffusion is also known as osmosis.

Answer 2

Salt, water, organic substances, poisons are generally turned ‘out of the cell’ through cell membrane.

Explanation:  

• Usually harmful substances are turned ‘out of the cell’. Different processes by which other substances are turned out of the cell are diffusion, osmosis, active transportation and carrier mediated transportation.  

• The movement of water in and out of the cell is mediated by osmosis. Water mainly moves ‘out of the cell’ when it is placed in a hypertonic solution.  

• Organic substances move ‘out of the cell’ either through diffusion through carrier mediated transport.

Learn more about cell membrane

In which cell will materials move faster from the cell membrane to the center of the cell? Why?

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