What is the survival rate for children with childhood leukemia?
A. 99%
B. 30%
C. 50%
D. 10%
E. 80%
Answer: E
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The above figure of goslings (baby geese)
following their mother demonstrates a. imprinting behavior. b. displaying instinctive behavior. c. feeding a social parasite. d. a learned behavior. e. all of these
All insertion sequences (IS elements) contain two features that are essential for their movement. What are these two elements?
A) transposase and oncogenes B) proto-oncogenes and oncogenes C) integrase and pseudogenes D) integrase and oncogenes E) transposase and inverted terminal repeats
Which statement about microarrays is false?
A) Microarrays enable scientists to determine the activity of thousands of genes at once. B) Microarrays use tiny portions of double-stranded RNA fragments from a large number of genes. C) Microarrays are used to determine which genes are active in different tissues or in tissues of different states of health. D) Microarrays use fluorescently labeled cDNA molecules to identify particular genes expressed at a particular time.
Which of the following pairs is mismatched?
A) DNA polymerase — makes a molecule of DNA from a DNA template
B) RNA polymerase — makes a molecule of RNA from an RNA template
C) DNA ligase — joins segments of DNA
D) transposase — insertion of DNA segments into DNA
E) DNA gyrase — coils and twists DNA