Usmle step 1 microbiology - Study guides, Class notes & Summaries

USMLE STEP 1 Microbiology LATEST EXAM QUESTIONS ANDLATEST EXAM QUESTIONS AND REVIEWED ANSWERS What is the exotoxin? Mechanisms of action? - ANSWER Exotoxins: protein toxins secreted by G+/G- - can be produced into toxoids - A-B ('two') component protein toxins - A = active (toxic) component; ex: ADP-ribosyl transferase - B = binds; binds to specific cell receptors to facilitate internalization - Cytolysins: lyse cells from outside by damaging membrane - C. perfrin...

USMLE Step 1 First Aid – Microbiology with complete solution Cell Wall Overall Picture - Compare *Gram (+) to Gram (-)* - answer *Flagellum* on bacteria is composed of what? What is the function? - answerComposition: Proteins Function: motility *Pilus/Fimbria* on bacteria is composed of what? What is the function? - answerComposition: Glycoprotein Function: Mediate adherence of bacteria to cell surface, sex plus during conjugation. *Spore* formation is ONLY possible is what type of b...

USMLE Step 1: Microbiology EXAM QUESTIONS AND ANSWERS LATEST |AGRADE organisms known for causing endocarditis - ANSWER- S. aureus, Staph epididermis, viridans strep, VRE, Strep. bovis, HACEK organisms four drug regimen used to treat TB - ANSWER- isoniazid, ethambutol, rifampin, pyrazinamide used to treat Trichomonas or Gardnerella - ANSWER- metronidazole used to treat Plasmodium vivax or ovale - ANSWER- chloroquine + primaquine used to treat Pediculosis capitis or pubus - ANSWER- per...

USMLE Step 1 Mnemonics-Microbiology (Bacteria) 100% SOLVED Gram Stain Limitations - ANSThese Rascals May Microscopically Lack Color Treponema (too thin) Rickettsia (intracellular) Mycobacteria (high lipid content in cell wall) Mycoplasma (no cell wall) Legionella pneumo (intracellular) Chlamydia (intracellular, no muramic acid in cell wall) Giemsa Stain - ANSCertain Bugs Really Try my Patience Chlamydia, Borrelia, Rickettsiae, Trypanosomes, Plasmodium PAS (periodic acid shiff) Stain -...

USMLE Step 1: Microbiology EXAM QUESTIONS AND ANSWERS LATEST |AGRADE organisms known for causing endocarditis - ANSWER- S. aureus, Staph epididermis, viridans strep, VRE, Strep. bovis, HACEK organisms four drug regimen used to treat TB - ANSWER- isoniazid, ethambutol, rifampin, pyrazinamide used to treat Trichomonas or Gardnerella - ANSWER- metronidazole used to treat Plasmodium vivax or ovale - ANSWER- chloroquine + primaquine used to treat Pediculosis capitis or pubus - ANSWER- pe...

USMLE Step 1: Microbiology EXAM QUESTIONS AND ANSWERS LATEST |AGRADE organisms known for causing endocarditis - ANSWER- S. aureus, Staph epididermis, viridans strep, VRE, Strep. bovis, HACEK organisms four drug regimen used to treat TB - ANSWER- isoniazid, ethambutol, rifampin, pyrazinamide used to treat Trichomonas or Gardnerella - ANSWER- metronidazole used to treat Plasmodium vivax or ovale - ANSWER- chloroquine + primaquine used to treat Pediculosis capitis or pubus - ANSWER- pe...

First Aid USMLE STEP 1- Microbiology Exam Review A+ 2023 Cell Wall Overall Picture - Compare *Gram (+) to Gram (-)* *Flagellum* on bacteria is composed of what? What is the function? - ANS-Composition: Proteins Function: motility *Pilus/Fimbria* on bacteria is composed of what? What is the function? - ANS-Composition: Glycoprotein Function: Mediate adherence of bacteria to cell surface, sex plus during conjugation. *Spore* formation is ONLY possible is what type of bacteria? Why is the ...

USMLE Step 1: Microbiology EXAM QUESTIONS AND ANSWERS LATEST |AGRADE organisms known for causing endocarditis - ANSWER- S. aureus, Staph epididermis, viridans strep, VRE, Strep. bovis, HACEK organisms four drug regimen used to treat TB - ANSWER- isoniazid, ethambutol, rifampin, pyrazinamide used to treat Trichomonas or Gardnerella - ANSWER- metronidazole used to treat Plasmodium vivax or ovale - ANSWER- chloroquine + primaquine used to treat Pediculosis capitis or pubus - ANSWER-...