Health Sciences 2330A/B Chapter Notes -Blood Transfusion, Osmosis, Pinocytosis
29 Sep 2013
School
Department
Course
Professor
Document Summary
Cell biology/cytology- the study of cell structure and function. Compartmentalization- how chemical reactions in the cell are separated: the isolation of specific kinds of chemical reactions within specialized membrane- enclosed structures inside the cell. 2. 1 a generalized cell- name and describe the three principal parts of a cell: plasma membrane: forms the cells flexible outer surface. Selective barrier (regulates flow of material into and out of the cell) Key role in communication among cells and between cells and their external environments: the cytoplasm- all the cellular contents between the plasma membrane and the nucleus. Two components: the cytosol and the organelles. Cytosol: the fluid portion of the cytoplasm, contains water, solutes and suspended particles: the nucleus- houses most of the cell"s dna. Contains chromosomes: a single molecule of dna associated with several proteins, contains 1000"s of hereditary units called genes.
