Remaining Time: 56 minutes, 56 seconds. Question Completion status: Which of the

Question

Remaining Time: 56 minutes, 56 seconds. Question Completion status: Which of the following is a serious concern when performing PCR? O high temperature needed may denature the DNA O restriction enzymes are difficult to obtain in adequate quantties mtroduction and amplification of contaminating DNA O exposure to radiation by the lab personnel it is a very time consuming process QUESTION 18 Thermococcus litoralis and Thermus aquaticus are thermophilic bacteria that are O used as cloning vectors. O sources of heat stable DNA polymerases O genetically engineered bacteria. principal sources of restriction endonucleases None of the choices are correct QUESTION 19 The use of an organism's biochemical processes to create a product is O genetc engineering O biotechnology O recombinant DNA O gel electrophoresis gene probes QUESTION 20 Vectors often contain a gene conferring drug resistance to their cloning host, in order to detect cells harboring the plasmid O True False QUESTION 21 patient tissues are transfected with viruses carrying a needed, normal human gene, the technique is called O cloning O gene therapy O antisense therapeutic. ONA fingerprinting. O None of the choices are correct QUESTION 22 An example of gene therapy is the insertion of the gene for human growth hormone into E. coli cells True O Faise

Explanation / Answer

17. Introduction and amplification of contaminated DNA is a serious concern while performing PCR.

18. They both are sources of heat stable DNA polymerase.

19. Biotechnology.

20. True.

21. Gene therapy.

22. True.

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