An acute infection and inflammation of the dermal layer of the skin is ________.
A. pharyngitis
B. cellulitis
C. scarlet fever
D. erysipelas
Answer: D
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The two interesting types of people who led researchers to discovery of the SRY gene were
A) physicists and chemists. B) XX males and XY females. C) XY males and XX females. D) XXX females and XYY males.
You add a weak acid solution to a sample of foraminifera shells, and they bubble and fizz. This tells you that the external shells of foraminiferans are composed of:
a. silica. b. protein. c. cellulose. d. calcium carbonate. e. starch.
Which annelid subgroup has many chitin-reinforced bristles called chaetae on their segments?
a. polychaetes b. oligochaetes c. leeches d. earthworms e. tapeworms
Which element is the basis for the macromolecules found in living things?
A) carbon B) hydrogen C) nitrogen D) oxygen