UB BIO 201 - exam 1 notes (18 pages)

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exam 1 notes



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exam 1 notes

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Pages:
18
School:
University at Buffalo, The State University of New York
Course:
Bio 201 - Cell Biology

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bio 201 Key terms Prokaryotic before a nucleus bacteria Eukaryotic Organelle In vivo in life real life In vitro in glass experimental situation In silico in the computer data Properties of live cells Possess a genetic program and the means to use it Asexual reproduction Acquire use energy Carry out chemical reaction metabolism Engage in mechanical activities move around Respond to stimuli Self regulate Evolution Based on these properties viruses are not cells Bacteria Prokaryotic Have plasma membrane but no nucleus 01 20 2012 Has a nucleoid Not all bacteria have a flagellum or a cell wall Plant cell Eukaryotic Some plants can have both mitochondria chloroplast Animal cell Eukaryotic o exceptions Mature red blood cells don t have a nucleus ER golgi or mitochondria Theories Endosymbiont theory Eukaryotic cells ingest prokaryotic cells which lead to the formation of the organelles Eukaryotic cells lost chloroplasts Types of bonds and interactions Covalent bonds Non covalent bonds o Ionic electrostatic bonds fully charges o Hydrogen bonds partial charges o Van der Waals interactions Hydrophobic aggregations o They are hydrophobic exclusions from water Not bonds interactions or forces between molecules Lecture 4 Four main types of organic macromolecules Carbohydrates sugars polar structures o Metabolic sugars mainly used for energy Glucose starch Glycogen storage form of glucose Metabolic sugar polymer o Structural carbs make up cell wall membranes Polysaccharides complex carbs Cell walls of plants cellulose Sugars on glycoprotein sugars covalently attached and glycolipids in membranes Protein o Amino acids are identified by their side chains Polar fully charged pH 7 hydrophilic Polar but uncharged pH 7 hydrophilic Nonpolar pH 7 hydrophobic non water soluble Not lipids o Free amino acids all have both an amino carboxyl group o Amino acids are covalently attached by peptide bonds between amino carboxyl groups o Charge depends on pH pH 7 free amino acid amino and carbonyl



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