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45 Cards in this Set

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Morphology: Cocci

Spherical or generally roundin shape


•Diplococcus


•Staphylococcus


•Streptococcus

Spheres

Cocci: Diplococcus

2 coffee beans kissing

Nisseria

Cocci: Staphylococcus

•Gram +


Cluster of hospital staff members posing group shot

Catalase

Cocci: Streptococcus

•Gram +


•Strep of button candy

Negative Catalase

Bacillus

Rodshaped


•Coccobacillus:Intermediate between cocci/rods


•Diplobacilli


•Streptobacilli

Spiral

Helical

Spirillum

Rigid spiral

Spirochetes

Thin,flexible spiral bacterian lang

Gram negative

Vibrio

Curved rods

Classification of Archaea: Crenarchaeota

•Mostly thermophiles & hyperthermophiles


•Marine organism

Classification of Archaea:Eurarchaeota

Organisms that live in methane or high salt environments

Classification of Archaea:Extremophiles

•Thermophiles/ hyperthermophiles – Thermotoplasmata


•Halophiles – Natronomonas


•Acidophiles/ alkalinophile - Sulfurisphaera, Natronomonas


•Metallotolerant – Ferroplasma


•Radioresistant - Thermococcus gammatolerans (withstandradiation levels over 30000 Gy)


•Xerophile

Extremophiles:Thermophiles/ hyperthermophiles

Thermotoplasmata

Extremophiles:Halophiles

Natronomonas

Extremophiles:Acidophiles/ alkalinophile

Sulfurisphaera, Natronomonas

Extremophiles: Metallotolerant

Ferroplasma

Extremophiles: Radioresistant

Thermococcus

Gammatolerans(withstand radiation levels over 30000 Gy)

Extremophiles: Xerophile

Xerophile

Methanogen

•Byproduct in anoxic environments


•Wetlands, swamps & marshes


•Flatulence in animals

Produces methane in?

Deeply Branching Bacteria

·Autotrophic,thermophilic & anaerobic, related to the oldest living organisms

Deinococcus

Tetrad of coccus, thick cell wall, outer membrane

Phototrophs: Cyanobacteria

• Fixes carbon & nitrogen & generate oxygen as a byproduct
•Produce variety of toxins: neurotoxin, cytotoxin, and hepatotoxin


•Reduces hydrogen sulfide & produce sulfur as a byproduct


•Found in hot springs or aquatic environments where hydrogen sulfide accumulate

AKA blue green algae

Phototrophs: Purple bacteria

Photosynthetic,anaerobic

Phototrophs: Endosymbiotic theory

Chloroplast evolved from phagocytized cyanobacteria

Gram Positive Bacteria

Separated into three phylum:


•Firmicutes


•Actinobacteria


•Tenericutes

Gram + Firmicutes - Low G + C bacteria

•Mostly gram positive


•Produces endospores


•Gut flora belong to this class

Main classes include: Bacilli & Clostridia

Gram +Bacilli

Genera: Bacillus (Aerobic)


B. anthracis (Anthrax)


•B. cereus (gastroenteritis food poisoning)

Spores forming rods

Gram +Genera: Bacillus: Listeria

•Listeria (Do not form spores)


•L.monocytogenes (Anaerobic)

Gram +Genera: Bacillus:


Staphylococcus

•S. aureus
•S.epidermidis

Gram +Genera: Bacillus: Streptococcus

•S. mutans


•S. pneumoniae


S. pyogenes - pus producing


•Gram +, low GC bacteria that produce lactic acidduring fermentation

Beta halo

Gram +Genera:Bacillus: Streptococcus: Lactobacillus

•Diverse group of normal flora in humans & animals


•Gram +, low GC bacteria that produce lactic acid during fermentation

Gram + Genera:Bacillus: Streptococcus: Enterococcus

•Large group of organisms found in humans as normalflora (commensal organisms)


•Gram +, low GC bacteria that produce lactic acid during fermentation

Gram +Clostridia

Spores forming rod

Genera: Clostridium

Harm host by secreting powerful exotoxins & enzymes. Rapid diagnosis or patient will die


•C. perfringens


•C. difficile


•C. Tetani


•C. botulism

Anaerobic

Gram +Tenericutes

Genera: Mycoplasma


•No cell wall, parasitic


•M. pneumoniae - smallestself-replicating pathogenic organism, only found within host cells

Tinest free living organism capable of self-replicating

Gram + Actinobacteria

High amount of G - C pairings in their DNA

Actinobacteria: Genera: Streptomyces

•Propionibacterium


•Corynebacterium - C. diphtheriae


•Mycobacterium - waxy, hydrophobic cell wall consist ofmycolic acid


oM. tuberculosis


oM. leprae

•Oldest 1 in the family, bugs resistant to it


•Causes pregnant woman deafness

Gram Negative Bacteria

Common phyla include:


•Proteobacteria


•Chlamydiae


•Spirochaetes

Gram Negative - Proteobacteria: Five classes

•Alphaproteobacteria


•Betaproteobacteria


•Gammaproteobacteria


•Deltaproteobacteria - Omit


•Epsilonproteobacteria

Outer membran compsed of lipopolysaccharides

Gram Negative - Alphaproteobacteria

•Phototrophic


•Able to fix nitrogen


Genus: Rickettsia obligate intracellular parasites


o Possess true cell walls


o R. Rickettsii

Low levels of nutrients

Gram Negative - Betaproteobacteria

•Aerobic


Genera include: Neisseria


•N. gonorrhoeae


•N. meningitides

Nutrient substances

Gram Negative -Gammaproteobacteria

•Medically relevant gram negative bacteria belong to thisclass


Genera:•Escherichia


•Yersinia•Y. pestis


•Klebsiella•K. pneumoniae


•Shigella•S. boydii


•Legionella•L. pneumonia


•Salmonella• S. enterica


•Pseudomonas•P. aeruginosa


•Vibrio• V. Cholerae

•Lives in GI Tract


•Largest subgroup

Gram Negative - Epsilonproteobacteria

•Found in GI tract of animals


Genera:


Helicobacter - causes peptic ulcers in human & stomach cancer •H. pylori


•Campylobacter - spiral shape move unipolar or bipolar flagella •C. jejuni

•Slender


•Micro-Aerophilic


•Flagella

Gram Negative - Chlamydiae

•Obligate intracellular parasite


•Possess a cell wall w/no peptidoglycan layer

C. trachomatis

Gram Negative - Spirochaetes

•Helical shaped


•Flagella runs lengthwisebetween the bacterial inner and outer membrane


•Genera:•Leptospira


•Borrelia - B. Burgdorferi


•Treponema - T. pallidum