Genetic Modification (Genetic Engineering) Quiz
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5 questions, one answer each
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1. What is the function of a restriction enzyme?
- A. It joins pieces of DNA together
- B. It cuts DNA at a specific base sequence
- C. It carries a gene into a host cell
- D. It produces insulin directly
2. Which structure commonly acts as a vector to carry a gene into a bacterial cell?
- A. A ribosome
- B. A plasmid
- C. A mitochondrion
- D. A chromosome pair
3. How is human insulin now mainly produced?
- A. Extracted from animal pancreases only
- B. By genetically modified bacteria grown in a fermenter
- C. By chemical synthesis in a factory with no living cells
- D. By selective breeding of pigs
4. What does 'transgenic' mean?
- A. An organism produced by selective breeding within one species
- B. The transfer of genetic material from one species to a different species
- C. An organism that has been cloned
- D. A plant grown by micropropagation
5. A scientist wants to insert a pest-resistance gene from one crop species into a different crop species. Which sequence of steps correctly describes this process?
- A. Use ligase to cut the gene, then a restriction enzyme to join it into a plasmid vector
- B. Use a restriction enzyme to cut out the gene and open a plasmid vector, then ligase to join the gene into the vector, before inserting the vector into the target crop cells
- C. Grow the two plants together so pollen naturally transfers the gene
- D. Use a fermenter alone, without any enzymes, to transfer the gene