A physiologist observes that the concentration of sodium inside a cell is decidedly lower than that outside the cell. Sodium diffuses easily across the plasma membrane of such cells when they are dead, but not when they are alive. What cellular function that is lacking in dead cells explains the difference? (a) osmosis, (b) diffusion, (c) active transport (solute pumping), (d) dialysis.
I. History of marine community ecology a. Era of exploration 1830-1960 i. We cannot expect to appreciate the present or predict the future without understanding the past. ii. Natural history—Charles Darwin iii. The challenger expedition got us started thinking about organisms as it collected marine organisms around the world (observing and cataloging) iv. Fisheries science—Johan Hjort: size and abundance of fish captures to understand population structures v. Nutrient cycling—Victor Henson vi. Larval biology—Gunther Thorson: figured out larvae corresponded to adult phase of organism vii. Stress ecology—John