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Biotechnology

Class 12 · Biology · 5 questions

Name: ____________________   Date: ____________

  1. Enzymes that cut DNA at specific sites are:

    • A Proteases
    • B Ligases
    • C Restriction enzymes
    • D Polymerases

  2. PCR is used to:

    • A Stain cells
    • B Copy DNA
    • C Grow plants
    • D Cut proteins

  3. Plasmids are used as:

    • A Enzymes
    • B Fuels
    • C Hormones
    • D Vectors

  4. Dolly the sheep was produced by:

    • A Fermentation
    • B Cloning
    • C Natural mating
    • D Selective breeding

  5. DNA fingerprinting is used in:

    • A Taking X rays
    • B Forensic identification
    • C Measuring blood pressure
    • D Digesting food

Answer key

1. C, 2. B, 3. D, 4. B, 5. B

  1. Restriction endonucleases cut at specific sequences.

  2. The polymerase chain reaction amplifies DNA.

  3. They carry genes into bacterial cells.

  4. She was cloned from an adult cell.

  5. Individuals have unique DNA banding patterns.