bio 20b ucsc

Chapter 52 Osmoregulation and Excretion Important Vocabulary / Concepts • Review of osmosis and diffusion • What is osmoregulation? • Osmotic challenges across various habitats • Kidney: structure, function, regulation and extremes. Diffusion v.s. Osmosis (review) • Osmosis - a type of passive diffusion involving water. It is the movement of water through a selectively permeable membrane from areas of higher concentration to areas of lower concentration. • Water moves from lower concentration of solutes (higher concentration of water) to higher concentration of solutes (lower concentration of water. • Hypoosmotic - a solution that has a relatively lower solute concentration compared to another solu