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Biotechnology
5 Class 12 Biology questions with answers and explanations.
Printable worksheet with answer key
All questions with answers
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Enzymes that cut DNA at specific sites are:
- 1 Proteases
- 2 Ligases
- 3 Restriction enzymes
- 4 Polymerases
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Correct answer: Restriction enzymes
Restriction endonucleases cut at specific sequences.
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PCR is used to:
- 1 Stain cells
- 2 Copy DNA
- 3 Grow plants
- 4 Cut proteins
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Correct answer: Copy DNA
The polymerase chain reaction amplifies DNA.
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Plasmids are used as:
- 1 Enzymes
- 2 Fuels
- 3 Hormones
- 4 Vectors
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Correct answer: Vectors
They carry genes into bacterial cells.
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Dolly the sheep was produced by:
- 1 Fermentation
- 2 Cloning
- 3 Natural mating
- 4 Selective breeding
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Correct answer: Cloning
She was cloned from an adult cell.
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DNA fingerprinting is used in:
- 1 Taking X rays
- 2 Forensic identification
- 3 Measuring blood pressure
- 4 Digesting food
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Correct answer: Forensic identification
Individuals have unique DNA banding patterns.
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