What is the<br/>most common cause of acute infective endocarditis? A: Viridans<br/>streptococci B: Hemolytic<br/>streptococci C: Enterococci D: Fungi E: Staphylococcus<br/>aureus

Penicillin antibiotics were among the first medications to be effective against many bacterial infections caused by staphylococci and streptococci.

Which bacterium is diplococci A: Staphylcocci B: Neisseriaceae C: Streptococci D: Pseudomonas

Which is common cause of acute glomerulonephritis A: Group A β hemolytic streptococci B: Mycoplasma C: parasites D: fungi E: CMV

Which<br/>of the following is the predominant flora of the mouth that is the<br/>major cause of dental caries () A: α-hemolytic<br/>streptococci B: Lactobacillus C: epidermidis D: coli E: fragilis

The bowel contains many microorganisms but the most prevalent bacterium is 未知类型：{'options': ['[tex=0.643x0.786]UUCIIc0kAs+A7XMSj7he2Q==[/tex]-hemolytic streptococci', 'Lactobacillus', 'S. epidemidis', 'E.coli', 'B. fragilis'], 'type': 102}

Which of the following is the predominant flora of the mouth that is the major cause of dental caries 未知类型：{'options': ['[tex=0.643x0.786]hlJJ6/DUY+n2/FE6M2JdRA==[/tex]-hemolytic streptococci', 'Lactobacillus', 'S. epidermidis', 'E. coli', 'B. fragilis'], 'type': 102}

A<br/>9-year-old girl develops fever and severe pain on the right side of<br/>her throat. On examination, redness and swelling in the right<br/>peritonsillar area are seen. A peritonsillar abscess is diagnosed.<br/>The most likely organisms to be cultured from this abscess are A: Staphylococcus<br/>aureus B: Streptococcus<br/>pneumoniae C: Corynebacterium<br/>species and Prevotella melaninogenica D: Viridans<br/>streptococci and Candida albicans E: Normal<br/>oral nasal flora