Which characteristic distinguishes facilitated diffusion from simple diffusion across a biological membrane?
Movement down a concentration gradient
Specificity for the transported molecule
Passive transport requiring no energy input
Dependence on membrane fluidity
Related Questions
Water channels are made up of how many different types of aquaporins?
Thirteen
Four
One
Seven
“Porins” are chemically?
Phospholipids
Carbohydrates
Proteins
Glycolipids
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
Water channels are made up of how many different types of aquaporins?
Eight
Four
Five
Twenty
Active transport
Releases energy
Requires energy
Produces ATP
Produces a toxic substance
Facilitated diffusion does not require/show
Special membrane proteins
Saturation of transport
ATP energy
Selective nature
If two molecules A & B move in the same direction. This movement can be called
Antiport
Symport
Uniport
Guttation
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
Facilitated diffusion
Needs a carrier protein
Is an active process
Occurs against the concentration gradient
Needs ATP
