Cell Membrane and Transport Quiz

What is the function of the cell membrane?

• To regulate cell division

• To store genetic information

• To produce energy for the cell

• To control what can enter and exit the cell

What is the movement of a substance from a region of high concentration to a region of low concentration called?

• Endocytosis

• Osmosis

• Active transport

• Diffusion

What is the purpose of the sodium-potassium pump?

• To establish an electrochemical gradient

• To release signaling molecules

• To transport oxygen molecules

• To regulate cell adhesion

Which type of solution has the same concentration of solute as the cell?

• Facilitated

• Hypertonic

• Isotonic

• Hypotonic

What is the movement of molecules against their concentration gradient called?

• Facilitated diffusion

• Osmosis

• Active transport

• Simple diffusion

What is the role of aquaporins in the cell membrane?

• To produce ATP

• To facilitate the movement of water

• To regulate cell recognition

• To transport glucose molecules

What is the purpose of endocytosis?

• To transport ions across the cell membrane

• To release macromolecules from the cell

• To take in macromolecules by forming new vesicles

• To establish an electrochemical gradient

What is the net movement of water in osmosis?

• From low solute concentration to high solute concentration

• From high water concentration to low water concentration

• From high solute concentration to low solute concentration

• From low water concentration to high water concentration

What is the role of cholesterol in the cell membrane?

• To regulate the fluidity of the cell membrane

• To transport signaling molecules

• To facilitate cell adhesion

• To produce energy for the cell

What is the movement of a substance from a region of high concentration to a region of low concentration called?

• Endocytosis

• Osmosis

• Active transport

• Diffusion