Biotechnology

Written by Dr. Hira Salman (Biology)

Class 12 · Biology · 8 questions

Name: ____________________ Date: ____________

Enzymes that cut DNA at specific sites are:
- A Proteases
- B Ligases
- C Restriction enzymes
- D Polymerases
PCR is used to:
- A Stain cells
- B Copy DNA
- C Grow plants
- D Cut proteins
Plasmids are used as:
- A Enzymes
- B Fuels
- C Hormones
- D Vectors
Dolly the sheep was produced by:
- A Fermentation
- B Cloning
- C Natural mating
- D Selective breeding
DNA fingerprinting is used in:
- A Taking X rays
- B Forensic identification
- C Measuring blood pressure
- D Digesting food
The enzyme that joins DNA fragments is:
- A DNA ligase
- B DNA polymerase only
- C Restriction enzyme
- D Protease
Genetically modified crops can be made resistant to:
- A Pests and herbicides
- B Light
- C Sound
- D Gravity
Gel electrophoresis separates DNA fragments by:
- A Taste
- B Colour
- C Age
- D Size

Answer key

1. C, 2. B, 3. D, 4. B, 5. B, 6. A, 7. A, 8. D