BIOL 103 Lecture Notes - Lecture 1: Udder, Eating Animals, Lysosome

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

Document Summary

Autotrophs: organisms that harvest light or chemical energy and store it in carbon compounds, exist in inorganic environments and manufacture organic compounds, primary producers,self nutrition, ex: plants. Heterotrophs: organisms that get complex nutrients from the environment and are found at higher trophic levels, receive nutrition by eating other organisms, other nutrition, ex: humans. Eat small organisms or food particles suspended in the water. Move water through a ltering structure to obtain food. Fungi can get nutrients from both dead organic matter and living animals (act as parasites), use extracellular digestion meaning they can be both parasitic or predatory. Athlete"s foot fungus - extends fungal branches (hyphae) into the cells. Dactylella dreschsleri - a fungus that has sticky knobs along the hyphae that can hold nematode worms, hyphae penetrate the worm"s body and digestive enzymes are released and extracellular digestion occurs. In phagocytosis there are various proteins (including snares), including ca++ that are involved, complicated process in protozoans.