LIFESCI 7C Midterm: Day 6 Part 1 Objectives
Document Summary
Define the terms hypertonic, hypotonic, and isotonic. Hypertonic:one where the concentration of solutes is greater outside the cell than inside it. Hypotonic: one in which the concentration of solutes is greater inside the cell than outside of it. Isotonic:one in which the concentration of solutes is the same both inside and outside of the cell. Isotonic is balanced, hypertonic is the blood cell shriveled up, hypotonic is the blood cell so full it will burst. Compare and contrast different forms of nitrogenous waste and their effect on osmotic balance. Ammonia: animals that excrete nitrogenous waste as ammonia need access to lots of water because ammonia can only be tolerated at very low concentration. If there was a high concentration of ammonia this can affect the animal in a negative way. Thus, ammonia excretion is most common in aquatic species. In most invertebrates, ammonia release occurs across the whole body surface.
