MEMBRANE TRANSPORT QUIZZ REVIEW

Which of the following is not characteristic of facilitated diffusion?

• It requires a carrier protein.

• It moves substances against a concentration gradient.

• It requires no energy input.

• It involves a change in the shape of its carrier.

Refer to the illustration below. The process taking place in picture Y is 

• 
  endocytosis

• exocytosis

• pinocytosis

• phagocytosis

The cell in beaker B would be

• 
  hypertonic

• hypotonic

• isotonic

• neutral

The solution in beaker C would be

• 
  hypertonic

• hypotonic

• isotonic

• neutral

During diffusion, when the concentration of molecules on both sides of a membrane is the same, the molecules will

• move across the membrane to the outside of the cell.

• stop moving across the membrane.

• stop moving across the membrane.

• stop moving across the membrane.

As a result of diffusion, the concentration of many types of substances

• always remains greater inside a membrane

• always remains greater inside a membrane

• always remains greater inside a membrane

• always remains greater inside a membrane

The process by which water passes into or out of a cell is called

• solubility

• selective transport

• osmosis

• 
  endocytosis

Diffusion takes place

• only through a lipid bilayer membrane.

• from an area of low concentration to an area of high concentration.

• only in liquids.

• from an area of high concentration to an area of low concentration.

Glucose molecules can enter cells through the process of

• exocytosis

• endocytosis

• ion pumps

• facilitated diffusion

Active transport systems are a form of cell transport that requires energy from molecules of ____________________.

• 
  NADP

• NAD

• sugar

• ATP