Polymyxin B is a small cationic peptide antibiotic that mimics the action of:
a. macrophages
b. lysosomes
c. defensins
d. killer cells
e. antibodies
Answer: c. defensins
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Microbiology Chapter 23
- Legionella is transmitted by
- Which one of the following produces small "fried-egg" colonies on medium containing horse serum and yeast extract?
- Which of the following is NOT an intracellular parasite?
- Which of the following is responsible for epidemics of respiratory disease in infants?
- A patient has fever, difficulty breathing, chest pains, fluid in the alveoli, and a positive tuberculin skin test. Gram-positive cocci are isolated from the sputum. The patient most likely has
- A patient who presents with red throat and tonsils can be diagnosed as having
- A patient has a paroxysmal cough and mucus accumulation. What is the etiology of the symptoms?
- Which of the following statements regarding tuberculosis is FALSE?
- Microscopic examination of a lung biopsy shows spherules. What is the etiology of the symptoms?
- Microscopic examination of a lung biopsy shows thick-walled cysts. What is the etiology of the symptoms?
- All of the following are classified as fungi EXCEPT
- Which of the following is mismatched?
- The patient is suffocating because of the accumulation of dead tissue and fibrin in her throat. What is the etiology of the symptoms?
- The patient has a sore throat. What is the etiology of the symptoms?
- The patient is suffocating because of an inflamed epiglottis. What is the etiology of the symptoms?
- A patient has pneumonia. Gram-negative rods are cultured on nutrient agar from a sputum sample. The etiology is
- Soil is a reservoir for all of the following EXCEPT
- Inhalation of arthroconidia is responsible for infection by which of the following organisms?
- Which one of the following causes a disease characterized by a red rash?
- All of the following are used as first-line drugs for treating tuberculosis EXCEPT
- The primary victims of the influenza pandemic of 1918-1919 were
- Infection by which of the following is often confused with viral pneumonia?
- Which of the following etiologic agents results in the formation of abscesses?
- Which of the following is an opportunistic pathogen?
- The most effective means of preventing influenza is
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