BIOL 103 Lecture Notes - Lecture 1: Anticoagulant, Starch, Amylase

• School: Queen's University
• Department: Biology
• Course: BIOL 103
• Professor: Virginia K Walker

Document Summary

Extracellular digestion fungi can convert polysaccharides to simple sugars ex. Bread mould, athletes foot, fungi can hold nematode worms cowboy fungi can take up simple products by making lassos (extracellular to that fungus) Protozoa, digestion occurs inside through phagocytosis (lysosome membranes fuse with food vacuole creating digestion) ex. Phospholipid membranes are negatively charged- calcium is used to neutralize it. Streptococcus- escapes phagocytosis, in a couple weeks" antibodies can be made for the foreign glycoprotein. Paramecium-intracellular digestion, cilia bring in food for phagocytosis, waste out the rectum b/c 2 openings. Hydra-extracellular digestion, secrete digestive enzymes then completes digestion intracellular, waste excreted through the mouth because on exit. Humans need cellulase to digest cellulose, horses have cecum for microbes to digest cellulose but their feces are still very fibrous. Rabbits eat their night feces in the morning from the previous night- put the grass through the digestive system twice so its not as fibrous.