IPHY 3410 1st Edition Lecture 1 Outline of Current Lecture 1 Describe the functions and characteristics of plasma membrane ER Golgi lysosomes and mitochondria 2 Interpret the cell type based on the abundance of certain organelles 3 Describe the function of three specialized contacts junctions 4 Predict the location of specialized junctions based on their functions 5 Describe the function of three cytoskeletal elements 6 Compare and contrast the three cytoskeletal elements Current Lecture Cells the fundamental living unit Functions Import nutrients Make additional molecules from nutrients Dispose of waste Maintain shape structure Replicate itself Parts of a Cell Cytoplasm intracellular fluid contains fluid cytosol and organelles Plasma Membrane phospholipid bilayer which separates extracellular and intracellular layers Protein molecules identify cells and transport them in and out o Attached to membrane Endoplasmic Reticulum stores calcium for communication and muscle activation Smooth ER lipid assembly and metabolism Rough ER ribosomes assemble proteins Golgi Apparatus sorts processes and packages proteins and membranes made by Rough ER Makes lysosomes which clean up cell Produces vesicles that contain proteins Lysosomes contain digestive enzymes produced by Rough ER Mitochondria performs glycolysis and oxidation which both produce ATP Contain its own DNA and RNA Contains its own DNA and RNA Metabolism comes from maternal linkage your mother Has a large surface area due to folds Muscle cells have a lot red blood cells don t These notes represent a detailed interpretation of the professor s lecture GradeBuddy is best used as a supplement to your own notes not as a substitute Cytoskeleton Microfilament actin and myosin filaments o Just below cell membrane o Generate contractile force for movement Microtubule shaped like a lattice o Hollow tubes of tubulin protein o Attachment site for organelles Intermediate Filament o Protein fibers are wound like rope o Resist pulling forces and resist tension Nucleus Contains DNA Typically one per cell but can have more than one