PHS 3504 Chapter Notes - Chapter 3: Endoplasmic Reticulum, Lipid Bilayer, Golgi Apparatus
26 Sep 2017
School
Department
Course
Professor
Document Summary
Cell theory: cells are the building blocks of all plants and animals and are produced by the division of preexisting cells: cells are the smallest units that perform all vital physiological functions. Each cell maintains homeostasis at the cellular level. Protector: membrane is a phospholipid bilayer with proteins, lipids and carbohydrate. Phospholipid head is hydrophilic and phospholipid tail is hydrophobic: cytoplasm: contains a jelly like fluid, cytosol. Exocytosis is to eject something from the cytoplasm: nonmembranous organelles: are not enclosed by a membrane and always in touch with cytosol. Made up of protein filaments: microfilaments, intermediate filaments, microtubules, thick filaments, microvilli: increases surface area or absorption of cell. Centriole: directs the movement of chromosomes during cell division otherwise known as mitosis: centrosome surrounds centriole. Beats rhythmically to move fluid across cell surface. Important: can be found freely floating around in cytoplasm of stuck on the endoplasmic reticulum, membranous organelles: are surrounded by lipid membranes.
