Quiz

QUIZ

1. In biological systems, which molecule is most able to undergo osmosis?

a. Sodium b. Glucose c. CO2 d. Water

2. What is most likely to be permeable across the cell membrane of the animal cell?

a. Lipids b. Glucose c. Sodium d. Amino acids

3. What is the driving force behind simple diffusion?

a. The permeability of the membrane b. The concentration gradient c. The energy substrate used to drive diffusion d. The type of solute involved

4. What molecule passes through the cell membrane via simple diffusion rather than facilitated diffusion?

a. Oxygen b. Glucose c. Sodium d. Chloride

5. Which category of pump involved in active transport belongs to the class of sodium-potassium ATPase pumps?

a. V-pump b. ABC pump c. P-pump d. F-pump

6. Which category of membrane pump will pump protons in lysosomes of animals and in the central vacuoles of plants?

a. V-pump b. ABC pump c. P-pump d. F-pump

7. In the sodium/calcium antiporter system of membrane transport, what happens to the sodium and calcium?

a. Calcium and sodium end up on the outside of the cell together b. Calcium and sodium end up on the inside of the cell together c. Calcium ends up on the outside of the cell and sodium ends up on the inside of the cell d. Calcium ends up on the inside of the cell and sodium ends up on the outside of the cell

8. Which symporter system involves the co-transport of a molecule and sodium in the same direction into the cell?

a. Glucose-sodium transport b. Hydrogen-sodium transport c. Hydroxyl-sodium transport d. Calcium-sodium transport

9. What causes a nerve cell to depolarize or to become less electronegative on the inside?

a. The sodium-potassium ATPase pump is turned off for a brief period b. Sodium passes through voltage-gated sodium channels into the cell c. Potassium leaves through voltage-gated potassium channels out of the cell d. Calcium enters the cell through calcium-ion channels

10. What causes the nerve cell to repolarize after it has depolarized initially?

a. The sodium-potassium ATPase pump is turned off for a brief period b. Sodium passes through voltage-gated sodium channels into the cell c. Potassium leaves through voltage-gated potassium channels out of the cell d. Calcium enters the cell through calcium-ion channels