Which of the following bodily fluids is commonly a source of infection by HIV?

A) breast milk
B) semen
C) vaginal secretions
D) both semen and vaginal secretions
E) breast milk, semen, and vaginal secretions


E

Biology & Microbiology

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The organisms that obtain energy by oxidation of hydrogen sulfide and use carbon dioxide as a carbon source are called

A. heterotrophs. B. chemoheterotrophs. C. autotrophs. D. chemolithoautotrophs.

Biology & Microbiology

Based on the phylogeny of fungi that is currently the most widely accepted, organisms of the phylum

____ belong to the fungal group that diverged the earliest from the rest of the fungi.

a. Glomeromycota b. Basidiomycota c. Chytridiomycota d. Zygomycota e. Ascomycota

Biology & Microbiology

Four of the five answers below are soil contaminants that can be phytoremediated by plants. Select the exception

a. nitrogen b. lead c. arsenic d. mercury e. trichloroethylene

Biology & Microbiology

The ________ of atoms determine how atoms will react with each other.

A. protons B. electrons C. nuclei D. neutrons

Biology & Microbiology