Which of the following two enzymes are needed to construct a cDNA library?
A. Reverse transcriptase and Taq polymerase
B. DNA ligase and Taq polymerase
C. Reverse transcriptase and DNA ligase
D. Taq polymerase and RNA polymerase
Answer: C
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The process by which pollen is transferred to the ovule is called
(a) transmigration. (b) fertilization. (c) pollination. (d) all of the above.
Which scenario best illustrates the process of natural selection?
A. a population of mosquitoes develops resistance to a pesticide. B. a plant loses its leaves in a drought. C. a population of foxes increases as more prey becomes available. D. a bear learns to find food at a garbage dump. E. a chameleon's color changes to brown as it sits on a log.
Without oxygen in a eukaryotic aerobic cell,
A. glycolysis will stop. B. the Krebs cycle will speed up. C. the mitochondria will shut down. D. proteins will be spared.
Which of the following is not a goal of the public health system?
A) prevents B) diagnoses C) designs treatments, cures, or vaccines D) investigates E) works to reduce health problems in the community