Which one of the following is characteristic of Neisseria meningitis but not Neisseria gonorrhoeae?
A. Contains a polysaccharide capsule
B. Is oxidase-positive
C. Most isolates show resistance to penicillin
D. Ferments glucose
E. No effective vaccines are available
Answer: A. Contains a polysaccharide capsule
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All of the following animals have placentas EXCEPT
a. kangaroos. b. opposums. c. echidnas. d. koalas. e. wombats.
How was E. coli was used to aid in the cloning of the bioluminescence genes from Vibrio fischeri?
A) Gene fragments from V. fischeri were transformed into E. coli and bioluminescent E. coli were identified. B) Gene fragments from V. fischeri were cloned into plasmids, transformed into E. coli, and then retransformed back into V. fischeri. C) Gene fragments from E. coli were used to disrupt the bioluminescence genes of V. fischeri by homologous recombination. D) Transposons from E. coli were used to mutagenize the bioluminescence genes of V. fischeri.
Which is NOT an example of a motor protein?
a. myosin b. dynein c. venosin d. kinesin
What is the interpretation of the following patient results? (normal values) WBC = 90.0 th/uL (5.0-10.0 th/uL,), with 89% lymphs (20-40%); CD3 = 90% (60-80%); CD5 = 87% (60-80%); CD10 = 0% (< 1%); CD4 = 88% (30-65%); CD20 = 12% (5-20%); CD34 = 0% (< 1%); CD8 = 3% (10-40%); kappa = 10% (3-15%); lambda = 5% (2-10%); CD19 = 15% (5-20%).
A) normal B) B-cell acute leukemia C) T-cell acute leukemia D) B-cell chronic leukemia E) T-cell chronic leukemia