Diffusion occurs when molecules move

From lower concentration to higher concentration.

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From higher concentration to lower concentration through a membrane.

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From higher concentration to lower concentration.

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When energy is used.

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Solution

The correct option is C From higher concentration to lower concentration.
Diffusion is a process that occurs when a substance such as molecules and ions, which are usually needed for various cellular processes, enter and leave cells. The way the cell diffusion happens is by molecules moving from an area of high concentration to low concentration.
So, the correct option is 'From higher concentration to lower concentration'.

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Similar questions

Question 6
Which among the following defines osmosis the best?

(a) Movement of water molecules from a region of higher concentration to a region of lower solute concentration through a semipermeable membrane
(b) Movement of solvent molecules from its higher concentration to a lower concentration
(c) Movement of solvent molecules from a higher concentration to a lower concentration of solution through a permeable membrane
(d) Movement of solute molecules from a lower concentration to a higher concentration of a solution through a semipermeable membrane

Q. Diffusion occurs from a region of lower concentration to higher concentration.

Q. The movement of solvent molecules from higher concentration to lower concentration through semipermeable membrane under pressure is termed:

When molecules move from the area of lower concentration to the area of higher concentration and energy is used, it is called

If osmosis is the movement of solvent only from higher concentration to lower concentration then how did the semi permeable membrane stop the flow of solvent from lower concentration to higher concentration?

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