SCIENCE
CELL BIOLOGY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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True
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False
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Either A or B
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None of the above
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Detailed explanation-1: -Unlike Facilitated Diffusion, Simple Diffusion is able to use the concentration gradient to move SMALL NON-POLAR molecules across the plasma membrane. Q. Passive Diffusion can be described as molecules moving DOWN the concentration gradient, from high to low, because it is powered by ATP.
Detailed explanation-2: -“Facilitated diffusion is a type of diffusion in which the molecules move from the region of higher concentration to the region of lower concentration assisted by a carrier.”
Detailed explanation-3: -Both facilitated diffusion and simple diffusion are types of passive transport. They move substances from an area of high concentration to an area of low concentration.
Detailed explanation-4: -B. Simple diffusion can only move material in the direction of a concentration gradient; facilitated diffusion moves materials with and against a concentration gradient.
Detailed explanation-5: -Facilitated diffusion is a type of passive transport. Even though facilitated diffusion involves transport proteins, it is still passive transport because the solute is moving down the concentration gradient. Small nonpolar molecules can easily diffuse across the cell membrane.