In breast tumors the presence of multiple copies of the HER2 gene is correlated with a more aggressive cancer
Which of the following methods would allow comparison of different cancer cells to determine which have more copies of the HER-2 gene?
A. PCR with primers that contain restriction sites
B. RT-PCR
C. quantitative PCR
D. PCR with conventional primers
E. All of these choices are correct.
C
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Viruses are characterized by all of the following except
A. being found in every organism investigated so far. B. being specific to the hosts they infect. C. being capable of independent reproduction. D. being acellular.
If you were highly allergic to bee stings, which of the following would be dangerous for you to do?
A. wearing sweet-smelling perfumes. B. wearing red shirts. C. wearing dark, drab clothing. D. humming as you work. E. None of the choices provided are dangerous.
A sampling error could occur from:a
a malfunctioning calculator. b. very few individuals in the control group. c. a poorly designed hypothesis. d. the scientist knowing which individuals were in the experimental group. e. having both an experimental and a control group.
Which of the following is/are a free-living amoeba that can cause encephalitis?
A) Acanthamoeba
B) Naegleria
C) Entamoeba
D) Naegleria and Acanthamoeba
E) Entamoeba and Naegleria