Cell Transport Mechanisms Quiz

What is the primary function of the plasma membrane?

• To produce proteins

• To provide energy to the cell

• To store genetic information

• To control what enters and leaves the cell

How do nonpolar molecules typically cross the plasma membrane?

• By osmosis

• By diffusion

• By facilitated diffusion

• Through active transport

What does it mean if a solution is isotonic?

• It has less solute than another solution

• It has more solute than another solution

• It has the same concentration of solutes as another solution

• It has no solutes

In a hypertonic solution, what happens to a cell?

• It remains unchanged

• It swells and bursts

• It shrivels and may die

• It becomes isotonic

What is facilitated diffusion?

• The movement of water across a membrane

• The diffusion of solutes with the help of a transport protein

• The passive transport of nonpolar molecules

• The active transport of ions

What is the role of transport proteins in facilitated diffusion?

• To help polar molecules cross the plasma membrane

• To break down solutes

• To store genetic information

• To provide energy for transport

Which type of transport requires energy in the form of ATP?

• Simple diffusion

• Active transport

• Osmosis

• Facilitated diffusion

What happens during endocytosis?

• Large molecules are expelled from the cell

• Water moves into the cell

• Large molecules are taken into the cell

• Solutes move out of the cell

Which process involves the plasma membrane helping large molecules move out of the cell?

• Endocytosis

• Osmosis

• Exocytosis

• Facilitated diffusion

What is osmosis?

• The diffusion of water

• The facilitated diffusion of proteins

• The movement of solutes against a concentration gradient

• The active transport of ions