Overgrowth of the skin bacterium Proprionibacterium acnes may lead to ________.

A. rash
B. warts
C. bloodstream infection
D. body odor


Answer: D

Biology & Microbiology

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If a population of diploid organisms has three different alleles for a particular gene, how many different genotypes are possible?

A. 2 B. 3 C. 6 D. 9 E. 12

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In a four-chambered heart, which of the

following would have the thickest muscle?

a. right atrium b. left atrium c. right ventricle d. left ventricle e. both ventricles would have equally thicker muscle than the atria

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Dr. Rebecca Lancfield used which of the following in her classification of the Streptococci?

A. The F protein B. The M-like protein C. The M protein D. The haemolytic pattern of the bacteria E. The C-carbohydrate (moiety) antigen in the cell wall

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Pseudomonas aeruginosa is a common pathogen that infects the airways of patients with cystic fibrosis. It does not grow in the absence of oxygen. The bacterium is probably which of the following?

A. an aerotolerant anaerobe B. an obligate aerobe C. an obligate anaerobe D. a facultative anaerobe

Biology & Microbiology