Loeffler & Hart: Introduction to Human Disease, Sixth EditionChapter 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 antibodiesB. Normal flora is allowed to proliferate to levels where they become

pathogenicC. This is an opportunistic infection that will only cause illness in the

immuno-compromised patientD. 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 negativeII. To identify viral pathogensIII. 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 IIIB. II, III, and IVC. I, III, and IVD. 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 feverB. Acute pharyngitisC. Necrotizing fascititsD. Abscesses

Ans: D

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

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

A. Streptococcus pneumoniaeB. Haemophilus influenzaeC. Neisseria meningitidesD. Group B streptococci

Ans: D

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

A. SyphilisB. GonorrheaC. ChlamydiaD. 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 diphtheriaeB. Bordetella pertussisC. Clostridium botulinumD. Clostridium perfringens

Ans: C

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

A. Mycobacterium lepraeB. Bordetella pertussisC. Mycoplasma pneumoniaeD. Streptococcus pneumoniae

Ans: C

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