Ans ethidium bromide Section 51 Multiple Choice Questions 21 The biological

Ans ethidium bromide section 51 multiple choice

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Section: 5.1 Multiple Choice Questions 21. The biological role of restriction enzymes in bacteria is to C Section: 5.1 22. Which of the following DNA sequences contains a 48 base palindromic site? (Note: Only one strand is shown.) E Section: 5.1 23. What do Southern, Northern, and Western blots detect, respectively? A Section: 5.1 24. The specificity or strigency of a PCR reaction can be controlled by altering the reaction A) volume. D) all of the above. B) target sequence. E) None of the above. C) temperature and salt concentration. Ans: C Section: 5.1
Chapter 5 Exploring Genes and Genomes 425. Reagents necessary for sequencing by chain termination include B Section: 5.1 26. The first three bases of the 6-base recognition cleavage site of HindIII are AAG. What is the complete sequence of this 6 bp site? B Section: 5.1 27. Plasmids used in recombinant DNA technology typically D Section: 5.2 28. A polylinker site contains A) many closely spaced restriction enzyme sites. B) links for antibiotic resistance. C) sequences allowing linkage to mRNA. D) All of the above. E) None of the above. Ans: A Section: 5.2 29. Why are met and trp often used to design DNA probes from amino acid sequences? A Section: 5.2 30. For identification of a gene, against which strand of DNA must the probe complement: the top or bottom strand? A Section: 5.2
Chapter 5 Exploring Genes and Genomes 5

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