Cells & Environment

Objectives

Section 1: Passive Transport

• 1. Relate concentration gradients, diffusion, and equilibrium.

  2. Predict the direction of water movement into and out of cells.

  3. Describe the importance of ion channels in passive transport.

  4. Identify the role of carrier proteins in facilitated diffusion.

Section 2: Active Transport

• 1. Compare active transport with passive transport.

  2. Describe the importance of the sodium-potassium pump.

  3. Distinguish between endocytosis and exocytosis.

  4. Identify three ways that receptor proteins can change the activity of a cell.