Membrane transport

The movement of molecules from one location to another simply as a result of their own thermal motion is called?

The rate of passive transport across a membrane by simple diffusion depends on what three factors?

• The magnitude of the driving force

• The amount of protein transporters

• permeability

• membrane surface area

What is the molecular weight of urea?

• 60 g/mol

• 120 g/mol

• 25 g/mol

• 38.2 g/mol

What is the molecular weight of albumin

• 66430 daltons

• 180 g/mol

• 235 daltons

• 23650 g/mol

True/False: Facilitated diffusion and passive transport require ATP for solute movement

• True

• False

What is Vmax?

• Where all carriers are fully saturated and transporting molecules across the membrane

• 1/2 of the km of transporters

• The minimum concentration of solutes for transportation to occur

• The increase of transporters due to the body's need