CK12 Biotechnology Quiz

What is the primary purpose of biotechnology?

• To improve computer software algorithms

• To develop technology for space exploration

• To change the genetic makeup of living things for human purposes

• To study the behavior of organisms in their natural habitats

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Which of the following is NOT a goal of biotechnology?

• Developing new smartphone technologies

• Curing genetic disorders

• Creating new treatments for human diseases

• Creating crops that yield more food

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What is gene cloning?

• A method to change the color of plants

• A process of isolating and making copies of a gene

• A technique to increase the size of animals

• A process to create identical organisms

What is the role of DNA ligase in gene cloning?

• It combines the isolated gene with plasmid DNA

• It breaks DNA at a specific base sequence

• It heats DNA to separate the strands

• It adds nucleotides to the primers

What is the purpose of the polymerase chain reaction (PCR)?

• To change the color of DNA

• To make many copies of a gene or other DNA segment

• To observe the behavior of genes under a microscope

• To decrease the quantity of a gene

Which enzyme is used in the extension step of PCR?

• Restriction enzyme

• DNA ligase

• RNA polymerase

• Taq polymerase

What is recombinant DNA?

• A segment of DNA that has been removed from a chromosome

• DNA that results from the combination of DNA from two different species

• DNA that has been heated to separate its strands

• A type of DNA that can replicate independently of chromosomal DNA

Which of the following is a use of transgenic animals in biotechnology?

• To increase the physical strength of animals for competitive sports

• To study diseases and develop treatments

• To improve the aesthetic appearance of pets

• To enhance the flavor of meat

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What is the significance of using a vector in gene cloning?

• It ensures the DNA is accurately replicated during cell division

• It is used to cut the DNA at specific sites

• It serves as a carrier to introduce a specific gene into a host cell

• It increases the mutation rate of genes for faster evolution

What role do restriction enzymes play in recombinant DNA technology?

• They join fragments of DNA together

• They replicate DNA fragments

• They cut DNA at specific sequences

• They eliminate foreign DNA from host cells