MICROBIOLOGY FINAL MEHARI EXAM

MICROBIOLOGY FINAL MEHARI EXAM

(ACTUAL / ) LATEST UPDATE WITH

VERIFIED ANSWERS.

antibiotic compounds produced by one microbe that adversely affect other microbes

broad spectrum effective against many species (both gram + and gram -)

narrow spectrum only work on one specific organism

bactericidal kill target organisms

bacteriostatic prevent further growth of organisms 1 / 4

Duchesne proposed that bacteria and molds are in a perpetual battle for survival

Bordetella pertussis causes whooping cough, inhibits mucous movement by binding to lung cilia

Streptococcus pneumoniae often one of the major causes of pneumonia (though other bacteria can cause it), has a capsule that prevents phagocytosis, if it invades the bloodstream it causes bacteremia and if it invades the covering of the brain it causes meningitis

Mycobacterium tuberculosis acid-fast bacillus, causes tuberculosis (TB), often has multi- drug resistant strains

Escherichia coli 2 / 4

there are at least 6 different strains of pathogenic E coli and all but UPEC cause gastrointestinal disease

Helicobacter pylori causes gastric ulcers, associated with gastric cancer

Treponema pallidum causes syphilis

Neisseria gonorrhoeae causes gonorrhoeae

Neisseria meningitidis has thick capsule and type IV pili, difficult to treat, causes meningitis

Chlamydia sp causes chlamydia (chlamydia trachomatis and chlamydia pneumoniae) 3 / 4

• falciparum

plasmodium that causes malaria

Yersinia pestis causes the plague (bubonic- lymph nodes and septicemic- bloodstream)

Borrelia burgdorferi causes lyme disease, transmitted by tick

Clostridium sp

• botulinum- botulism (blocks release of acetylcholine) and c.

tetani- tetanus (blocks release of GABA)

Gastritis inflammation of the stomach lining (ex- ulcers)

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