Podcast
Questions and Answers
Match the following bacteria with their primary function:
Match the following bacteria with their primary function:
Azospirilium = Forms a symbiotic relationship with sugarcane and tropical grass Rhizobium = Provides nitrogen to legumes like alfalfa Nitrobacter = Converts ammonia (NH3) into nitrites (NO2) Nitrosomonas = Breaks down nitrites (NO2) into nitrates (NO3)
Match the following pathogens with their associated diseases:
Match the following pathogens with their associated diseases:
Bartonella = Causes cat scratch fever Rickettsia = Causes Rocky Mountain fever Wolbachia = Affects egg development and causes Zika virus Brucella = Causes zoonotic infections and spontaneous abortions in ungulates
Match the following bacteria with their habitat or source:
Match the following bacteria with their habitat or source:
Thiobacillus = Recycles sulfur using hydrogen, found in soil and used by miners with leach pads Zoogleal = Found in sewage, forms flock and sink Sphacontus = Found in sewage, forms flock and float Bordetella = Aerobic bacteria that is very fastidious
Match the following bacteria with their characteristics:
Match the following bacteria with their characteristics:
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Match the following human pathogens with their associated diseases:
Match the following human pathogens with their associated diseases:
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Match the following bacteria with their primary habitat:
Match the following bacteria with their primary habitat:
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Match the following bacteria with their oxygen requirements:
Match the following bacteria with their oxygen requirements:
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Match the following terms with their descriptions:
Match the following terms with their descriptions:
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Match the following bacteria with their characteristics:
Match the following bacteria with their characteristics:
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Match the following diseases with their respective characteristics:
Match the following diseases with their respective characteristics:
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Match the following bacteria with their associated infections:
Match the following bacteria with their associated infections:
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Match the following bacterial groups with their characteristics:
Match the following bacterial groups with their characteristics:
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Match the following bacteria with their associated diseases:
Match the following bacteria with their associated diseases:
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Match the following bacteria with their characteristics:
Match the following bacteria with their characteristics:
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Match the following bacteria classification with their characteristics:
Match the following bacteria classification with their characteristics:
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Match the following bacteria toxins with their effects:
Match the following bacteria toxins with their effects:
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Match the following bacteria products with their uses:
Match the following bacteria products with their uses:
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Match the following bacteria environmental adaptations with their characteristics:
Match the following bacteria environmental adaptations with their characteristics:
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Match the following pathogens with their associated diseases:
Match the following pathogens with their associated diseases:
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Match the following bacteria with their characteristics:
Match the following bacteria with their characteristics:
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Match the Streptomyces species with the antibiotics they produce:
Match the Streptomyces species with the antibiotics they produce:
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Match the following symptoms with the respective diseases caused by bacteria:
Match the following symptoms with the respective diseases caused by bacteria:
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Match the following bacterial species with their primary impact on pregnant women:
Match the following bacterial species with their primary impact on pregnant women:
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Match the bacteria with their preferred environmental conditions:
Match the bacteria with their preferred environmental conditions:
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Study Notes
Neisseria
- Fimbriae attach to mucus membranes
- Two human pathogens: N. gonorrhea and N. meningitis
- N. gonorrhea: 2nd most common STD/STI, infects mucus of urogenital (oral/anal) and conjunctiva, can cause PID (pelvic inflammatory)
- N. meningitis: causes meningitis, attacks the meninges and spinal cord, symptoms include stick neck, coma, and fever
Gamma Proteobacteria
- Largest and most diverse group
- Shapes, sizes, and arrangements vary
- Metabolic pathways vary
- Human pathogens: Legionella, L. monocytogenes, and Mycoplasm
Legionella
- Difficult to grow, found in water, streams, AC units, and hot tubs
- Facilitative intracellular parasite, reproduces inside and outside host
Listeriosis
- Food borne pathogen, very serious for pregnant women
- Can't eat sushi, deli meat, or unpasteurized products
- Babies can get listeria from mom in utero
Mycoplasm
- No cell wall, DNA related to Gram +
- Pleomorphic, like a fried egg
- M. pneumoniae: walking pneumonia, causes arthritis in goats
- M. hominis: urogenital infections and complications of pregnancy
Actinobacteria
- High G-C Ratio
- Common source of antibiotics
- Obligate aerobes, facultative anaerobes
- Capable of nitrogen fixation
- Fresh dirt smell
- Streptomyces: produces chlortetracycline, tetracycline, streptomyocin, and erythromycin
Mycobacterium
- Waxy walls, acid fast, very slow growing
- M. tuberculosis (TB): tubercules of connective tissue surround bacteria (white death)
- M. leprae (leprosy – Hansen's disease): still around today, causes disfiguring, circulatory problems, and nerve damage, treatable
Miscellaneous
- Chlamydia: obligate intracellular bacteria (STD), causes trachoma and pneumonia
- Spirochetes: spiral with axial filaments, move like a drill, free living, water environments, various O2 requirements
- Borrelia burgdorferi: causes Lyme disease, tick → deer → humans, symptoms: bullseye rash, fever, joint pain, and neuro issues
- Treponema: Low nutrients, makes nitrogen for others, aerobes, unusual intracellular extensions (prostheca)
- Azospirillum: Ag important, symbiotic relationship with sugarcane, tropic grass
- Rhizobium: nitrogen to legumes, alfalfa (N2 → NH4), makes amino acids and proteins
Nitrogen Cycle
- Nitrobacter: 1st step, converts ammonia (NH3) → nitrites (NO2)
- Nitrosomonas: 2nd step, breaks down nitrites more (NO2) → nitrate (NO3)
- Uses inorganic chemicals as energy source, CO2 only carbon source
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Description
Test your knowledge about bacteria involved in nitrogen fixation, such as Azospirillum, Rhizobium, Nitrobacter, and Nitrosomonas. Learn about their roles in converting nitrogen into forms usable by plants and other organisms.