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Quiz Reports Bacteriology Which bacteria produce a black pigment on bile-esculin agar?

Which bacteria produce a black pigment on bile-esculin agar?

Which bacteria produce a black pigment on bile-esculin agar?

Answer: Group D streptococci and enterococci

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Bacteriology

What is a live-attenuated vaccine?
Methemoglobinemia occurs when the ferrous (Fe2+) form of iron in hemoglobin is oxidized to the ferric (Fe3+) form and cannot bind O2. What are the clinical manifestations of methemoglobinemia?
Which antibiotic is a PABA analog with a side effect profile that includes hemolysis and methemoglobinemia?
Name the three drugs commonly used in the treatment of leprosy:
What are important side effects of INH?
What is the mechanism of action for INH?
What are some common side effects of rifampin?
Why shouldn't rifampin be used as monotherapy?
What are common indications for rifampin?
What is the mechanism of action of rifampin?
What is the mechanism of action of ethambutol and what is its unique side effect?
Which drugs are commonly used to treat Mycobacterium tuberculosis infection?
What is the drug of choice for treating simple recurrent UTIs?
What are important side effects of trimethoprim?
What is the mechanism of action of trimethoprim?
What are some other side effects of sulfonamides?
What is the main risk of giving sulfonamides during pregnancy?
Can bacteria obtain folic acid by diffusion or active transport?
Which enzyme in bacterial folate synthesis is inhibited by sulfonamides?
Name two antibiotics that inhibit bacterial growth by acting as p-aminobenzoic acid (PABA) analogs:
Why are fluoroquinolones contraindicated in pregnant women and in children?
How does resistance to fluoroquinolones develop?
What are common indications for fluoroquinolones?
What is the mechanism of action of fluoroquinolones (ciprofloxacin, norfloxacin)?
Which new class of antibiotics that inhibit protein synthesis can also treat VRSA and VRE?

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Learn More Multiple Choice Question :

Ampicillin or amoxicillin can be used to treat which organisms?
How does probenecid increase the half-life of penicillin G?
What is the standard treatment of meningitis caused by L. monocytogenes?
Do β-lactamase inhibitors such as clavulanic acid or tazobactam improve activity of β-lactams against β-lactam-resistant P. aeruginosa?
What are the advantages of meropenem over imipenem?
What are the potential problems with cephalosporins that contain N-methyl-thiotetrazole side chains?
How do certain gram-positive bacteria become resistant to vancomycin?
Why are penicillins and cephalosporins ineffective against Mycoplasma pneumoniae?
What is the Jarisch-Herxheimer phenomenon?
Which cephalosporin antibiotics have the best coverage against P. aeruginosa?
What is the chief concern of having high plasma levels of imipenem?
Which penicillin class can be used to treat Pseudomonas aeruginosa?
Which drug is the treatment of choice for methicillin-resistant S. aureus (MRSA) and what are its major side effects?
Why is imipenem, which has the broadest coverage of all the β-lactam drugs, always given with cilastatin?
How do bacteria become resistant to β-lactam drugs?
Which penicillins are the semisynthetic (anti-Staph) penicillins that are potentially more resistant to β-lactamases?
Which β-lactam antibiotic is safe for the treatment of gram-negative organisms such as Pseudomonas in patients with penicillin allergies?
Which cephalosporin antibiotics are often used for the treatment of community-acquired meningitis? Why?
What are the only types of bacteria susceptible to aztreonam?
Which cephalosporins are commonly used as prophylaxis for gastrointestinal (GI) surgery? Why?

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