Certain integral membrane proteins facilitate the diffusion of molecules across the membrane without directly binding to the transported molecule. These proteins create a continuous aqueous pathway through the lipid bilayer. Which of the following is the BEST example of such facilitated diffusion?
GLUT transporters moving glucose
Sodium-potassium pump maintaining ion gradients
Aquaporins transporting water
Chloride channels gated by voltage
Related Questions
If two molecules A & B move in the same direction. This movement can be called
Antiport
Symport
Uniport
Guttation
Water channels are made up of how many different types of aquaporins?
Eight
Four
Five
Twenty
Water channels are possessed by a membrane to facilitate the movement of hydrophilic substances.
These channels are made up of
Proteins
Lipids
Carbohydrates
Nucleic acids
Water channels are made up of how many different types of aquaporins?
Thirteen
Four
One
Seven
Facilitated diffusion involves?
Downhill transport
Without expenditure of energy
Involvement of proteins
All
What are the aquaporins in facilitated diffusion process?
Membrane proteins
Carrier proteins
Channel proteins
Carrier lipids
What are the aquaporins in facilitated diffusion process?
Membrane proteins
Carrier proteins
Channel proteins
Carrier lipids
An example of facilitated diffusion is the transport of:
Oxygen across the cell membrane
Carbon dioxide out of cells
Glucose into cells
Water through aquaporins
“Porins” are chemically?
Phospholipids
Carbohydrates
Proteins
Glycolipids
Facilitated diffusion
Needs a carrier protein
Is an active process
Occurs against the concentration gradient
Needs ATP
