Exercise Reviews

Chapter 3

1. Diffusion defined as _____________________________

2. Using the diagram below, defined the following beaker solutions: Hypotonic solution, Isotonic solution and Hypertonic solution.

A. ___________ B. ____________ C. ____________________

3. Diffusion operates in all environments, but Osmosis can only occur across a ___________ .

4. The driving force behind Brownian movement is ______________

5. As the particle of carmine dye diffusion in the liquid, what is the relationship between the size of the particles and amount of movement? _______________

6. Active transport can only occur in _______________________.

7. As a substance diffuses away from its source the rate of diffision _____________.

8. As you compare the molecular weights of various substances and compare their rates of diffusion, the larger the molecular weight the ___________ the rates of diffusion.

9. The selective permeability of a cell membrane means that larger molecules are __________ (prevented/permitted) to pass through.

10. In a osmotic gradient, the side which is Hypotonic is the side which will _________ (gain/lose/equalize) solute molecules with respect to the Hypertonic side.

11. Active transport can move materials _____________ (against a concentration gradient/larger molecules too big to fit through the pores/increase rates of diffusion/all of the answers are correct)

12. Do the results of diffusion experiments in which liquids in solids (potassium permangante/rose bengal) and gas in air (ammonium hydroxide) agree?

_________________