BIOL 103 Lecture Notes - Lecture 1: Hydrolysis, Chymotrypsinogen, Goblet Cell

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

Document Summary

Thurs 9:30 , 12:30, 3:30 (cid:1) (cid:1) (cid:1) (cid:1) (cid:1) (cid:1) (cid:1) Heterotrophs other nutrition from environment, animals. Not all heterotrophs are animals venus flytrap. Fungi can be parasitic or predatory (athlete"s foot, cowboy fungi) Folds of the membrane surround particle to be ingested. Vacuole then pinches off inside the cell. Lysosomes fuse with vacuole and digest particles. Various proteins and calcium are involved in endocytosis. We protect ourselves from microbes using phagocytosis. Some organisms have evaded this, streptococcus causes pneumonia, it is coated with slippery carbohydrates that allows it to escape white blood cells resulting in pneumonia. Extracellular digestion digested food is phagocytosed directly into the cells. Ruminant (forestomach) is made up of the rumen, reticulum and the omasum. In herbivores microbes aid in the digestion of cellulose. We produce 1l of saliva a day. Gastric juice in our stomach is made up of hcl & pepsin (low ph)