Scabies is a skin disease caused by a

A) slow virus.
B) protozoan.
C) mite.
D) bacterium.
E) prion.


C

Biology & Microbiology

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The structure of a DNA molecule is analogous

to a

a. paper clip. b. ladder. c. fork. d. rope. e. coiled spring

Biology & Microbiology

The sessile stage of many cnidarians is a 

A. larva. B. polyp. C. medusa. D. zygote.

Biology & Microbiology

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

Biology & Microbiology

This is another class of intermediate filaments found in epithelial cells:

A. keratin B. myosin C. tubulin D. amino acids E. actin

Biology & Microbiology