Lecture 1 Outline

Lecture 1 Outline - 1 BIOL 200 (Section 921) Lecture # 1...

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1 BIOL 200 (Section 921) Lecture # 1 June 15, 2009 Reading : Essential Cell Biology (ECB) 2 nd edition. Chap 1 and Chap 2, Chap 5 , pages 169-177 Background Study Material : Study Panels 2-1, 2-2, 2-3, 2-4, 2-5, 2-6, 2-7 (pages 66-79). Good questions: 1-6, 1-7, 1-9, 1-10, 1-12, 1-18. Assignments: 1.Make a diagram relating the relative size of a typical nucleus, mitochondrion, a bacterium and a ribosome. 2. Practice to identify the cell organelles in electron micrographs of a variety of cell types using the Image Database website: https://www.biomedia.cellbiology.ubc.ca/cellbiol/ Learning Objectives Be able to critically define cells and organelles Know the major classes of eukaryotic cell organelles and their functions. Develop a general feel for the flow of information and the flow of material in cells. Know the different types of microscopy and their functions Know the mechanism and key reactions of synthesis of macromolecules Know the different forces that stabilize the DNA structure I. CELL ORGANIZATION - Structure & Function Cells and organelles Cells are biological structures, bounded by membrane that are capable of carrying out essential life processes such that they can maintain a stable internal environment with concentrations of molecules and ions that differ from those outside, can transform and assimilate material , and reproduce . Single cells can be an individual=unicellular organism Cells can be organized into communities=either as colonies of individuals or multicellular organisms. In multicellular organisms, cells specialize or "differentiate". All cells of an organism contain same DNA but differential gene expression leads to very different cell structures. Cells are divided into two fundamental types: (Panel 1-2: bacterial cell vs. 2 types of eukaryotes (animal and plants). 1. Eukaryotes (true nucleus)-typical of multicellular organisms, contain nuclei and subcellular compartments surrounded by cytoplasm. Can be unicellular (e.g. protozoans) 2. Prokaryotes (before nucleus)-bacteria, nucleic acids in cytoplasm; Prokaryotic cell – no organelles, no
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Lecture 1 Outline - 1 BIOL 200 (Section 921) Lecture # 1...

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