Care in the handling and disposal of diapers in day care centers may prevent the spread of which of the following?

A) hepatitis A virus
B) Giardia intestinalis
C) Salmonella enterica
D) Cryptosporidium parvum
E) norovirus


B

Biology & Microbiology

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Of the following organisms, which one is among the Aggregatibacter aphrophilus, Aggregati-bacter actinomycetemcomitans, Cardiobacterium hominis, Eikenella corrodens, and Kingella spp. (HACEK) group of organisms that cause slowly progressive bacterial endocarditis?

a. Capnocytophaga gingivalis b. Sphingomonas paucimobilis c. E. corrodens d. A. actinomycetemcomitans

Biology & Microbiology

Which stage(s) is (are) the diploid sporozoite

stage(s) of the Plasmodium (malaria) parasite? a. A b. B c. C d. A and B e. none of these

Biology & Microbiology

Free-living developmental stages that do not resemble the adults are 

A. viruses. B. embryos. C. larvae. D. fossils.

Biology & Microbiology

When plants undergo allopatric speciation, an initial reproductive barrier is often

A) polyploidy. B) gametic isolation. C) temporal isolation. D) pollinator choice.

Biology & Microbiology