PPT-Figure A1 Figure A1. Proportion of study participants with gram-negative bacteria

Aiello AE Marshall B Levy SB DellaLatta P Lin SX Larson E Antibacterial Cleaning Products and Drug Resistance Emerg Infect Dis 2005111015651570 httpsdoiorg103201eid1110041276. A. Introduction – There are multiple criteria by which you can classify an organism. 1. Metabolic Activities (Carbon, Energy & Oxygen sources). A) Recall that microbes may vary in their carbon & energy sources. Part-2. Sulfur Dioxide(SO2) and Sulfites(SO3). Sulfur dioxide, Sodium sulfite(Na2SO3), Sodium bisulfide(NaHSO3), and Sodium . metabisulfite. (Na2S2O5) are used to control microorganisms and insects in soft fruits, lemon juices, beverages, sausages, pickles, and fresh shrimp.. Gram Stain Reaction. The Gram stain reaction, named after the Danish bacteriologist Hans Christian Gram, was originally devised in 1882.. Gram staining is based on the ability of the bacterial cell wall to retain the crystal violet dye. . Gram positive cocci. Bile-Esculin. Enterococcus. identification. Esculin. .  . Esculitin. + Glucose. esculitin. + Fe  . Ferric. citrate (. dark. . brown. ). Selective. media. Bile . added. A. Introduction – There are multiple criteria by which you can classify an organism. 1. Metabolic Activities (Carbon, Energy & Oxygen sources). A) Recall that microbes may vary in their carbon & energy sources. Structure and Function. 2. Prokaryote & Eukaryote. Evolution. 3. Cellular Evolution. Current evidence indicates that . eukaryotes evolved from prokaryotes. between 1 and 1.5 billion years ago. Two theories:. Biology and Biotechnology department. Differential . stain separate bacteria into group . . Gram . Stain :. Differentiate bacteria into 2 groups:. Gram . positive bacteria . Gram . negative bacteria . Physical differences & clinical . signifigance. . . Figure 4.8b. Gram- positive bacteria. Gram-negative bacteria. Figure 4.8a. Gram-Positive cell walls. Teichoic acids:. Lipoteichoic acid links to plasma membrane. continued. Gram Stain. When bacteria are treated with a dye made up of crystal violet and iodine they react in one of two ways. . Bacteria . cells that appear purple are gram-positive and bacteria that change to pink are gram-negative. .  . Bacteria form a large group of parasitic, saprophytic, and free-living microorganism .  . 1. Bacterial cell wall (protects against osmotic damage).  . Bacterial cell is prokaryotic. Contains high concentration . Internal Structures:. cytoplasm. nucleoid. ribosomes. Boundaries:. cell membrane. cell wall. capsule. Appendages:. flagellum. pili. Shapes of Bacteria. Bacteria Identification Criteria. Shapes. . . . . Dr.oruba. Khalid abbas. ACTINOMYCETES. In this lecture , we shall discuss 3 genera of actinomycetes: . Actinomyces, Nocardia. , and . Streptomyces.. . These organisms have been shown to be . 11. General Characteristics of Prokaryotic Organisms. Prokaryotes. Most numerous and diverse group of cellular microbes. Thrive in various habitats. Only a few are capable of colonizing humans and causing disease. Gram Positive. Gram Negative. Gram-Positive bacteria. Gram-Negative bacteria. Cell Wall. A single-layered, smooth cell wall.  A double-layered, wavy cell-wall. Cell Wall thickness. The thickness of the cell wall is 20 to 80 .