A. actinomycetemcomitans can be distinguished from A. aphrophilus by its:
a. negative test for catalase.
b. positive test for lactose fermentation.
c. positive test for catalase.
d. negative test for oxidase.
C
A. actinomycetemcomitans can be distinguished from A. aphrophilus by its positive test for cata-lase and its negative test for lactose fermentation.
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How many covalent bonds do noble gases form in nature?
a. Noble gases may form as many as three covalent bonds. b. Noble gases may form up to eight covalent bonds. c. Noble gases do not form covalent bonds with other atoms. d. Noble gases only form single bonds with other noble gases.
Placoderms were among the first fishes to display
a. jaws. b. gill openings. c. cartilaginous skeletons. d. jaws and gill openings. e. jaws, gill openings, and cartilaginous skeletons.
If you conduct a monohybrid cross of two heterozygous Yy pea plants, what percentage of the offspring will be heterozygous? Select one:
a. 25% b. 100% c. 75% d. 50% e. 0%
Second largest category; there are six domains of life: Bacteria, Archaea, Protists, Animals, Plants, Fungus