What characterstic is shared by simple diffusion and facilitated diffusion?

Both require cellular energy for the transport of substances.

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Both involve the movement of water across a semipremeable membrane.

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Both require a special carrier molecule to move substances across the membrane.

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Both involve the movement of a substance from regions of a higher concentration to lower concentration without cellular energy.

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Solution

The correct option is D
Both involve the movement of a substance from regions of a higher concentration to lower concentration without cellular energy.

Movement of substances from a region of high to low concentration takes place till equilibrium is achieved. If the transport takes place with the help of a transporter protein embedded in the plasma membrane it is called facilitated transport, for e.g. transport of glucose. Thus, diffusion is similar to facilitated diffusion as transport of molecules takes place from region of high concentration to low concentration without the requirement of energy.

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Similar questions

Movement of molecules of a substance from the region of their higher concentration to the region of their lower concentration without the involvement of a separating membrane is called

(a) Osmosis (b) Diffusion

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. In which type of passive transport simple diffusion or facilitated diffusion. A carrier protein is required for transport across the membrane.

Q. Active transport is the movement of molecules across a cell membrane from a region of their lower concentration to a region of their higher concentration.

Osmosis is the movement of _________ molecules from a region of higher concentration to a region of lower concentration through a semipermeable membrane.

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