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Bio Exam - Chapter 12
Terms and Essay Questions
11
Biology
Undergraduate 2
04/12/2010

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Definition
The use of living organisms (often microbes) to perform useful tasks; today, usually involves DNA technology.
Term
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Definition
An organism that contains genes from another species.
Term
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Definition
A small ring of independently replicating DNA separate from the main chromosome(s). Plasmids are found in prokaryotes and yeast.
Term
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Definition
A bacterial enzyme that cuts up foreign DNA (at specific restriction sites), thus protecting bacteria against intruding DNA from phages and other organisms. Restriction enzymes are used in DNA technology to cut DNA molecules in reproducible ways.
Term
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Definition
The incorporation of new genes into a cell from DNA that the cell takes up from the surrounding environment.
Term
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Definition
A DNA molecule carrying genes derives from two or more sources.
Term
Bacteriophage
Definition
A virus that infects bacteria; also called a phage
Term
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Definition
The direct manipulation of genes for practical purposes.
Term
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Definition
An international collaborative effort to map and sequence the DNA of the entire human genome.
Term
gene therapy
Definition
alteration of an afflicted individual's genes.
Term

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Explain what a bioengineered food is as well as the pros and cons of bioengineered crops.

Definition

Bioengineered foods are foods that have had a gene from a different species of plant or other organism introduced to produce desired characteristics or traits.

 

Pros: It can help people in areas where regular crops would not prosper. Large savings in production may lead to financial gain and help fight poverty.

 

Cons: Poor countries will not have easy access to genetically engineered food unless directly given to them, which means that the world's richest nations will control the market. This may result in a high dependency on the side of the poor nations, which will in turn lead to a broken economy.

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