OBJECTIVE LIFE SCIENCE
CELL BIOLOGY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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movement of particles from [high] to [low]
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a protein “helper”
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movement of particles from [low] to [high]
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energy
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Detailed explanation-1: -Ans)There is a distinction between the two in that in simple diffusion, molecules move without the assistance of membrane proteins, whereas in facilitated diffusion, membrane proteins assist molecules in their movement downward.
Detailed explanation-2: -Facilitated diffusion is a type of passive transport in which substances move across the cell membrane through helper proteins. Because it is a form of passive transport, it requires no energy to occur.
Detailed explanation-3: -Active transport is not the same as facilitated diffusion. Both active transport and facilitated diffusion do use proteins to assist in transport. However, active transport works against the concentration gradient, moving substances from areas of low concentration to areas of high concentration.