1-29 notes

1-29 notes - 1/29 Exam 1 next Thurs 6pm in same room...

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1/29 Exam 1 next Thurs. @ 6pm in same room Learning objectives on moodle Review Sessions Quiz 4 due Tues. @ 9am and Quiz 4 B Clicker: all mammals have prion proteins in their nervous tissue: True The normal protein and the disease causing prion differ in their: secondary structure Problems Increased size means relatively less surface for a unit of volume This causes a problem with movement of materials into and out of the cell A second problem is controlling and coordinating Overview – Cell Structure Keeping cell distinct from the environment Organizing and coordinating metabolic processes Three Domains Bacteria (combination of bacteria and archaea-prokaryotes) Archaea Eukarya Prokarytotes “before” the nucleus No internal membrane-bound organelles Eukaryotes “true” nucleus Have organelles bounded by membranes
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1/29 Prokaryotes (bacteria and blue-green algae) 1. Cell wall of carbohydrates and peptides 2. Ribosomes differ from Eukaryotes in size and antibiotic sensitivity 3. No nucleus or linear (histone-complexed) chromosomes 4. No internal membranes Eukaryotes (animals, plants, fungi, yeasts) Larger cell size Need increased internal membranes Problem of intake of nutrients Problem of coordination and control of metabolism
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This note was uploaded on 08/22/2010 for the course BIOL 1201 taught by Professor Wishtichusen during the Spring '07 term at LSU.

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1-29 notes - 1/29 Exam 1 next Thurs 6pm in same room...

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