BIOS 242 Week 6 Assignment; Lab 12 0f 14 Onsite; Bacteria of Respiratory System

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Contributor

Matthew Lillard

Category

Biosciences

Course

BIOS 242 Fundamentals Of Microbiology With Lab

Institute

Chamberlain

Pages

4

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Lab 12: Bacteria of the Respiratory System Introduction: The respiratory system is divided into two parts: the upper and lower respiratory systems. The lower respiratory system is an axenic environment because of the cilia that lines the respiratory tract, alveolar macrophages and IgA antibodies found in the mucus. The upper part harbors a variety of microbiota such as Gram-negative bacteria Hemophilus, Gram-positive bacteria such as Staphylococcus aureus and diphtheroids that can cause opportunistic infections leading to infection like pneumonia and diphtheria. Blood agar plates (BAP) mimic our respiratory system- they are differential in nature and demonstrate the different ways in which microorganisms hemolyze the red blood cells (RBCs) in the medium. The 3 different types of hemolysis seen on BAP are: Alpha hemolysis: Alpha or partial hemolysis is demonstrated by organisms such as Streptococcus pneumo

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