File: Chap 26, Chapter 26

Loeffler & Hart: Introduction to Human Disease, Sixth Edition Chapter 26 – Test Bank

Multiple Choice

1. Obstruction of the Eustachian tube can lead to infection by what mechanism:

A. It lacks a blood supply to carry phagocytes and antibodies B. Normal flora is allowed to proliferate to levels where they become pathogenic C. This is an opportunistic infection that will only cause illness in the immuno-compromised patient D. Affecting the structural barrier defense mechanism

Ans: B

2. The clinical reason for ordering a gram-stain in addition to culture and susceptibility includes which of the following:

I. To identify whether the bacteria is gram positive or negative II. To identify viral pathogens III. Start antibiotic therapy, while waiting on the results of the culture and susceptibility IV. To identify coccal and bacillary forms of bacteria

A. I, II, and III B. II, III, and IV C. I, III, and IV D. I and IV

Ans: C

3. Staphylococcus aureus is part of our indigenous flora. If it becomes pathogenic, which of the following is it likely to cause?

A. Scarlet fever B. Acute pharyngitis C. Necrotizing fascitits D. Abscesses

Ans: D

4. Which bacterium are pregnant women screened for due to its devastating effects on the baby?

A. Streptococcus pneumoniae B. Haemophilus influenzae C. Neisseria meningitides D. Group B streptococci

Ans: D

5. Which sexually transmitted disease has three stages, the first of which involves development of a chancre?

A. Syphilis B. Gonorrhea C. Chlamydia D. Trichomoniasis

Ans: A

6. Which of the following is an anaerobic organism that grows in soil and proliferates and produces toxin in improperly canned vegetables?

A. Corynebacterium diphtheriae B. Bordetella pertussis C. Clostridium botulinum D. Clostridium perfringens

Ans: C

7. Which of the following is the most common cause of atypical pneumonia?

A. Mycobacterium leprae B. Bordetella pertussis C. Mycoplasma pneumoniae D. Streptococcus pneumoniae

Ans: C