Microarrays, bioinformatics and GMO risks and benefits Quiz
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5 questions, one answer each
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1. A microarray spot fluoresces. What does this show?
- A. The gene is present in the genome
- B. The gene is being transcribed in the sample
- C. The gene has been mutated
- D. The protein is being translated
2. Which statement about bioinformatics is correct?
- A. It is a lab technique that cuts DNA
- B. It is used only to make GM crops
- C. It uses computer software and databases to compare sequences, helping to predict gene function
- D. It requires living cells to work
3. Red cDNA is from a tumour and green cDNA from healthy tissue. A spot is red. What does this show?
- A. The gene is more active in the tumour
- B. The gene is more active in the healthy tissue
- C. The gene is equally active in both
- D. The gene is not active in either
4. Which is a risk of growing a GM crop that makes an insect toxin?
- A. The crop has a lower yield
- B. Pollen may carry the genes to wild relatives, and pests may evolve resistance
- C. The crop cannot photosynthesise
- D. Insecticide use must increase
5. A GM rice makes β-carotene. What is the main benefit?
- A. It increases the yield of the crop
- B. It makes the rice resistant to herbicides
- C. It makes rice grow without water
- D. It can reduce vitamin A deficiency