LIFE SCIENCE

OBJECTIVE LIFE SCIENCE

CELL BIOLOGY

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
What is facilitated diffusion?
A
Transport that uses proteins to help move molecules across the membrane.
B
Movements of substances through a membrane.
C
When molecules spread from High to Low concentration on their own.
D
When pressure pushes something through a membrane.
Explanation: 

Detailed explanation-1: -Facilitated diffusion therefore allows polar and charged molecules, such as carbohydrates, amino acids, nucleosides, and ions, to cross the plasma membrane. Two classes of proteins that mediate facilitated diffusion are generally distinguished: carrier proteins and channel proteins.

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