PSIO 5th Edition Lecture 3 Outline of Last Lecture Chemical Level of Organization Principles of Physiological Chemistry Outline of Current Lecture I Cellular Level of Organization I Introduction to Cell Biology II Cells definitions and review of Biology III Amino Acids IV Structure Types V Types of Membrane Proteins Current Lecture 1 Homeostasis higher levels of biological organization arise from coordinated activity or cells 2 Nucleus Contains chromatin DNA and special Proteins 3 Nucleic Envelope Import and Export 4 Golgi Apparatus made up of layers used to package proteins 5 Mitochondria make ATP immediate energy 6 Cytoplasm liquid in cells cytosol 7 Cytoskeleton made of microfilaments microtubules cell division and intermediate filaments 8 Plasma Membrane cell membrane 9 Organelles membrane bounds structures by special proteins 1 Membranous organelles Nucleus and mitochondria 2 Non membranous organelles cytoskeleton and ribosomes 10 Membrane made of lipids and proteins phospholipids Amino Acids makes proteins using linear sequence An amino acid is composed of four groups the amino acid branch the carboxyl branch the R side chain and the Hydrogen branch 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 Amino acids can have four structures 1 2 3 4 Primary structure polypeptide straight structure Secondary structure alpha helix coiled peptide or beta Tertiary knotted polypeptides in a specific way Quaternary hemoglobin molecule Types of Membrane Proteins 1 Integral Proteins run across the cell membrane are amphipathic 2 Peripheral Proteins are free to float in and out of cell membrane
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