Manipulating Genetic Material BSCS Ch 11

What is the primary way farmers have historically improved their herds of animals?

• Gene therapy

• Genetic engineering

• Selective breeding

• Recombinant DNA technology

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What is recombinant DNA?

• DNA that is naturally occurring

• DNA that has been artificially created by combining genes from different organisms

• DNA that is used only in agriculture

• DNA that is found only in bacteria

Which organism is used to produce human insulin through genetic engineering?

• Hogs

• Bacteria

• Cotton plants

• Cows

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What is the main benefit of using Bt cotton plants?

• They require more sunlight

• They grow faster than regular cotton plants

• They produce more cotton

• They are resistant to bollworms

What is the role of Bacillus thuringiensis in genetic engineering?

• It is a chemical used in pesticides

• It is a bacterium used to produce a protein toxic to bollworms

• It is a plant that is resistant to diseases

• It is a pest that attacks cotton plants

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What is gene therapy?

• Using bacteria to produce human insulin

• Spraying Bt bacteria on crops

• Crossing plants with desirable traits

• Introducing genetically engineered human cells into a human body to cure a genetic defect

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Why was insulin from cows and hogs not ideal for human use?

• It was too expensive

• It was not similar enough to human insulin for some individuals

• It was available in unlimited supplies

• It was more effective than human insulin

What is a transgenic organism?

• An organism that has been selectively bred

• An organism that contains genes from distantly related species

• An organism that is resistant to all diseases

• An organism that can produce its own food

What concern is raised by the use of Bt cotton plants?

• They require more water

• They may harm endangered species of moths and butterflies

• They are more expensive to produce

• They are less effective against pests

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What is the main drawback of spraying Bt bacteria on crops?

• Sunlight breaks it down and rain washes it off

• It is ineffective against all pests

• It is harmful to humans

• It is too expensive

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