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Cardiac Arrhythmias by Claire Perry 1 | CPR St. Louis

By at December 21, 2012 | 2:47 pm | 1 Comments

An arrhythmia is defined as any variation from the normal rhythm in the heartbeat.  When the heart beats, the electrical impulses that cause it to contract follow a specific pathway through the heart.  Heart arrhythmias occur when the electrical impulses that control the heartbeat do not work properly, causing the heart to beat either too fast, too slow, or more...

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Antibiotic Resistance – Microbiology Lecture Online

By at November 18, 2012 | 10:33 am | 4 Comments

Microbiology Antibiotic Resistance   I. Antibiotic Resistance A. Any large population of bacteria is likely to already have a few cells that are drug resistant. 1. Due to random mutations or transfer of plasmids B. If the drug is not present, then these resistant cells will stay few in number C. When drug is present, the few cells with the resistant more...

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Control Microbial Growth – Microbiology Outline Notes

By at October 22, 2012 | 5:50 pm | 2 Comments

Microbiology Control of Microbial Growth   I. Terminology A. Sterilization – removal or destruction of all microbial life (including endospores) B. Disinfection – destruction of pathogens; does not remove all microbial life, but decreases the numbers 1. Disinfectant – chemical used on a surface (kitchen counter) 2. Antiseptic – chemical more...

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Microbial Genetics – Microbiology Outline Notes

By at October 8, 2012 | 5:22 pm | 0 Comment

Microbiology Lecture Notes Microbial Genetics I. Deoxyribonucleic acid (DNA) A. 2 Strands, Double helix B. Composed of Nucleotides 1. Phosphate, deoxyribose sugar, nitrogen base 2. Nitrogen Bases a. Adenine (A), Guanine (G), Thymine (T), Cytosine (C) 3. A--T and C---G are complementary bases, hydrogen bonded to each other C. DNA Replication 1. Parental DNA more...

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Microbial Metabolism – Microbiology Lecture Outlines

By at September 26, 2012 | 7:09 am | 4 Comments

Microbiology Microbial Metabolism   I. Metabolism – all chemical reactions (making or breaking bonds) in a cell A. Catabolism – breaking down; breaking bonds 1. Hydrolytic reactions 2. Exergonic – release energy B. Anabolism – building molecules; making bonds 1. Dehydration synthesis reactions 2. Endergonic – consume more...

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