HEPA filters are used to remove microbes from
A. liquids.
B. air.
C. medical instruments.
D. human tissues.
E. All of these choices are correct.
Answer: B
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The vessels that return blood to the heart in a closed circulatory system are referred to as
A. arteries. B. veins. C. capillaries. D. sinuses. E. auxiliary hearts.
The two proteases in the small intestine that complete protein digestion are ____
a. aminopeptidase and dipeptidase b. aminopeptidase and disaccharidase c. dipeptidase and disaccharidase d. dipeptidase and phosphatase e. nucleotidase and nucleosidase
A method called _____ uses diagrams to group species based on their shared characteristics
a. taxonomy b. cladistics c. phylogeny d. comparative morphology e. exaptation
A microbiologist Gram stains a bacterium and finds the bacterium to be pink to red in color. This identifies the
A. bacterium as disease-causing organism. B. species of bacterium. C. bacterium as gram-positive. D. bacterium as gram-negative. E. bacterium as an endospore former.