They get a bad rep’, but most are good. Bacteriology: the study of bacteria.
Easy learning bacteria kml, BACTERIA, BACTERIOLOGY, FOR MEDICAL REPRESENTATIVE
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Transcript of Easy learning bacteria kml, BACTERIA, BACTERIOLOGY, FOR MEDICAL REPRESENTATIVE
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A 3 ½ BILLION YEAR SUCCESS STORY
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• Discovered in the late 1600’s by Anton van Leeuwenhoek
• This discovery would not have been possible WITHOUT the invention of the
MICROSCOPE
BACTERIA
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A microorganism is simply a very small organism that you cannot see with your naked eye
Single celled organisms
• Very small
• Need a microscope to see
• Can be found on most materials and surfaces
• Billions in your body right now
BACTERIA
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Bacteria are prokaryotic -
which means they DO NOT have nucleus
Bacterial Cell
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Three basic shapes Rod shaped called bacilli (buh-sill-eye) Round shaped called cocci (cox-eye) Spiral shaped
Bacilli
Cocci
Spiral
Bacterial Basic Shape
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Wall structure Gram +
Staphylococcus, Streptococcus, Clostridium, Bacillus Gram -
Neisseria meningitidis, Enterobacter Species, Pseudomonas, H. influenzae
Acid-fast Mycobacterium
Wall-less Mycoplasma
Unusual Obligate intracellular
Rickettsia, Chlamydia
Bacterial Classification
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Bacteria in your mouth are more than all of the humans on Earth.
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Major Structures of a Bacteria Cell
•Capsule
•Cell wall
•Ribosomes
•Nucleoid
•Flagella
•Pilli
•Cytoplasm
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Capsule
keeps the cell from drying out and helps it stick to food or other cells
Major Structures of a Bacteria Cell
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Cell wall
Thick outer covering that maintains the overall shape of the bacterial cell
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Ribosomes
cell part where proteins are made
Ribosomes give the cytoplasm of bacteria a granular appearance in electron micrographs
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Nucleoid
a ring made up of DNA
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Flagella
a whip-like tail that some bacteria have for locomotion
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Pilli
hollow hair-like structures made of protein
allows bacteria to attach to other cells.
Pilli-singular Pillus-plural
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Cytoplasm
clear jelly-like material that makes up most of the cell
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Friendly Bacteria
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– Lactobacillus acidophilus– Used for turning milk into yogurt and to preserve
other dairy products
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Pseudomonas putida
Cleans wastes from sewage water at water treatment plants
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Streptomyces
Soil bacteria used to make streptomycin, an antibiotic used to treat bacterial infections
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– Escherichia coli– Bacteria that live in your colon and small intestine.
Helps you digest your food every day.
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HarmfulBacteria
Pathogen
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What is a pathogen? Bacteria that make you sick
Why do they make you sick?
To get food they need to survive and reproduce
How do they make you sick?
They produce poisons (toxins) that result in fever, headache, vomiting, and diarrhea and destroy body tissue
Infections Infections Infections Infections
Infections
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Infections
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Alexander Fleming
Discovered Penicillin
Discovered penicillin from the mold Penicillium notatum in 1928
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Kamal Chandra UpretiM.Pharm
Thanks ..