Test Your Understanding of Concepts and Principles

potential. Explain why these values differ.

Explain how the Na+/K+ pump contributes to the resting membrane potential.

Describe the cause-and-effect sequence whereby a genetic defect results in improper cellular transport and the symptoms of cystic fibrosis.

Explain how simple diffusion can be distinguished from facilitated diffusion and how active transport can be distinguished from passive transport. Compare the theoretical membrane potential that occurs at K+ equilibrium with the true resting membrane

6. Using the principles of osmosis, explain why movement of Na+ through a plasma membrane is followed by movement of water. Use this concept to explain the rationale on which oral rehydration therapy is based.

7. Distinguish between primary active transport and secondary active transport, and between cotransport and countertransport. Give examples of each.

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Blood Pressure Health

Blood Pressure Health

Your heart pumps blood throughout your body using a network of tubing called arteries and capillaries which return the blood back to your heart via your veins. Blood pressure is the force of the blood pushing against the walls of your arteries as your heart beats.Learn more...

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