BIOL 1001 Chapter : Chapter 9 Part 2

• School: LSU
• Department: Biological Sciences
• Course: BIOL 1001
• Professor: All

Document Summary

Osmosis: diffusion of water, always with respect to water and not solutes, from higher water potential to lower water potential, figure 7. 12, low solute concentration: high concentration of water, high solute concentration: low concentration. Rbc and rbc shrivels: plant, hypotonic solution: swells, but called turgid (normal, does not burst because they have cell wall, isotonic: flaccid; nothing happens, hypertonic solution: plasmolyzed; shrinks, marine intervetebrates: Isotonic with sea water: accumulate free amino acids to match the tonicity of sea water, marine elasmobranch fishes, sharks and rays, accumulate up to 0. 5 m urea. Isotonic with sea water: freshwater bony fish (teleost fish, hypertonic to freshwater, tendency of gaining water, marine bony fish (teleost fish, hypotonic to sea water, will lose water to surroundings. Aquaporins: proteins embedded in membrane to regulate flow of water across membrane. Exocytosis: process by which cell directs contents of secretory vesicles out of the cell: throw out of the cell.