Health Sciences 2330A/B Lecture Notes - Lecture 1: Golgi Apparatus, Extracellular Fluid, Nucleolus

• School: Western University
• Department: Health Sciences
• Course: Health Sciences 2330A/B
• Professor: Graham Fraser

Document Summary

List and describe the principle parts of the cell. List and describe the major organelles of the cell. Plasma membrane: semi-permeable barrier that separates the cell"s internal environment from its external environment; regulates passage of substances in/out. Nucleus: houses the genetic material of the cell dna. Nucleolus: contains specific dna for building rna in ribosomes. Mitochondria: powerhouse of the cell; creates energy (atp) Endoplasmic reticulum: synthesis, storage, and transport of proteins and lipid molecules (rough er protein synthesis; smooth er lipid synthesis) Golgi apparatus: packages proteins from rough er into membrane-bound vesicles. Lysosomes and peroxisomes: storage vesicles from golgi; contain enzymes that act as the digestive system of the cell (destroys damaged organelles, kills bacteria, and breaks down dangerous chemicals) Secretory vesicles: transport proteins to cell membrane for release into the extracellular environment. Phospholipid molecules: phosphate head and lipid tail, primary structure of cell is double layer of phospholipid molecules.