Describe the structure and function of the cell membrane.

What materials get in and out of the cell? What regulates this and how?

Describe the importance of the concentration gradient to the movement of particles.

Explain the following: diffusion, facilitated diffusion, osmosis, passive transport, active transport, endocytosis and exocytosis.

What is the equilibrium of a cell?

Describe hypo, hyper and isotonic solutions and what results from them.

What adaptations do water living creatures have to efficiently exchange gases?

What adaptations do land living creatures have to efficiently exchange gases?

Explain the human respiratory system.

What system do humans have to maintain homeostasis by eliminating wastes? Explain how the major organs of the system work to accomplish the task. (kidneys/nephrons/glomerulus)