BIOL 103 Lecture Notes - Lecture 2: Urea Cycle, Tsetse Fly, Liver Transplantation
21 Oct 2017
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No pepsin in insects: neutral ph/ alkaline ph do not have pepsin adaptations: salivary glands, active proteases eliminated with feces tsetse fly: produces anticoagulant coagulation of the blood. Hypertonic with respect to the freshwater: water naturally runs into them. Makes uric acid from nh3 and co2 uric acid: not toxic, insoluble saves a lot of water. Uric acid as the nitrogenous waste of birds. Uric acid stored in allantois and left behind at hatching ammonia, urea are toxic, slightly toxic cannot be in shell for 3 weeks needs absolutely nontoxic wastes nitrogenous wastes are deposited in inside of shells. Guano: birds excrete uric acid as droppings with digestive waste. Uric acid high in nitrogen used as fertilizer. Produces ammonia puddles dry up produces stress stress changes enzymes produces urea rain comes again and produces ammonia. No liver damage in high levels of ammonia nitrogenous waste ammonia urea when water is not available.
