Facilitated diffusion moves what type of molecules
Answers
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Facilitated diffusion is the passive movement of molecules across the cell membrane via the aid of a membrane protein
☞It is utilised by molecules that are unable to freely cross the phospholipid bilayer (e.g. large, polar molecules and ions).
☞This process is mediated by two distinct types of transport proteins – channel proteins and carrier proteins
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Answer:
Polar and charged molecules like carbohydrates, amino acids, nucleoside, and ions move by Facilitated diffusion.
Explanation:
Facilitated diffusion is defined as a type of diffusion assisted by carrier proteins and the molecules move from a region of higher concentration to a lower concentration.
In Facilitated diffusion, the movement of molecules is passive movement along the concentration gradient.
The two important factors that help the Facilitated diffusion is electric charge and pH.
The cells of the living system are made up of a lipid-based membrane which allows small molecules and proteins across the membrane. The hydrophilic, polar and charged molecules cannot pass through the membrane easily.
To facilitate the transfer of these molecules across the membrane, trans-membrane or integral membrane proteins are required.
They are also known as channel proteins or carrier proteins.
Example:
- Glucose transporter: Facilitate the transport of glucose across the membrane.
- Aquaporins: Facilitate the transport of water across the membrane. This type of diffusion is known as Facilitated Diffusion.
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