Animal Physiology, Third Edition Hill • Wyse • Anderson Chapter 5: Transport of Solutes and Water

1. The process of _______ arises from the molecular agitation that exists in all systems above absolute zero and the tendency for such agitation to carry more molecules out of regions of relatively high concentration than into these regions. a. solute affinity b. facilitated diffusion c. active transport d. diffusion e. osmosis Answer: d Textbook Reference: Passive Solute Transport by Simple Diffusion, p. 101 Bloom’s Category: 1. Remembering 2. Outward diffusion of a substance from an animal cell increases the concentration of that substance around the outer surface of the cell. This surface is called the a. boundary layer. b. bulk solution of the cell. c. stagnant diffusion membrane. d. region of backup diffusion. e. low-concentration region. Answer: a Textbook Reference: Passive Solute Transport by Simple Diffusion, p. 102 Bloom’s Category: 2. Understanding 3. In the Fick diffusion equation, if the units of D are cm2 ∙ s‒1 , which of the following best represents the units for J?