Gene technology Quiz
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5 questions, one answer each
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1. Which enzyme joins two DNA fragments?
- A. Restriction endonuclease
- B. DNA ligase
- C. DNA polymerase only
- D. Helicase
2. Why is a human gene inserted into the middle of a tetracycline resistance gene on a plasmid?
- A. So that the plasmid replicates faster
- B. So that bacteria will become resistant to ampicillin
- C. So that the gene is expressed in tetracycline
- D. So that the gene is inactivated and recombinant plasmids can be identified
3. A colony grows on the ampicillin plate but not on the tetracycline replica plate. What does it contain?
- A. No plasmid
- B. A non-recombinant plasmid
- C. A recombinant plasmid
- D. A virus
4. What is the main purpose of a knockout mouse?
- A. To produce a human protein in milk
- B. To show the function of a gene by comparing with normal mice
- C. To make a herbicide-resistant mouse
- D. To increase the number of mice
5. Why does GM soya with more oleic acid and less polyunsaturated acid last longer?
- A. Oleic acid is a protein
- B. Polyunsaturated acids are more stable
- C. Oleic acid kills bacteria
- D. Polyunsaturated acids oxidise more easily