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DNA Technology Test
N/A
30
Biology
10th Grade
03/09/2014

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Term
What is a genome?
Definition
An organisms complete set of DNA
Term
What is the Human Genome Project?
Definition
A 13 year long project to identify the order of all 3 billion base pairs in human DNA
Term
How many base pairs does the Human Genome contain?
Definition
3 billion
Term
How many genes does the Human Genome contain?
Definition
20,000 - 25,000
Term
How will the information from the Human Genome Project help us in the future?
Definition
Developing molecular medicine, energy & environmental applications, risk assessment (assess DNA), bio-archaeology, anthropology, evolution, DNA forensics, agriculture
Term
What is DNA sequencing?
Definition
The process of identifying the order of nitrogen bases within a segment of DNA or a gene?
Term
What is within each reaction mixture for the process of DNA sequencing?
Definition
DNA segment of unknown sequence, DNA polymerase, a primer, a mixture of four naturally occurring nucleotides, one of the four radioactively labeled dideoxynucleotides
Term
5' to 3'? or 3' to 5'?
Definition
5' to 3'
Term
How does the Lac Operon operate?
Definition
Lac genes turned OFF by the repressor protein and turned ON by the presence of Lactose
Term
How the Lac Operon works WITHOUT Lactose?
Definition
DNA binding protein is bound to the OPERATOR, so RNA polymerase CANNOT work
Term
How the Lac Operon works WITH Lactose?
Definition
Lactose binds to repressor DNA binding protein, this causes the protein to change SHAPE and FALL OFF the DNA Operator, so RNA polymerase CAN work
Term
What does the Lac Operon have?
Definition
Promoter - nucleotide sequence where RNA polymerase binds, operator - segment of DNA used to turn gene expression on or off, repressor protein binds here, three genes - for making proteins involved in breaking down lactose
Term
What does PCR stand for?
Definition
Polymerase Chain Reaction
Term
What are the basic steps of PCR?
Definition
Denaturation (94 degrees Celsius, Primer annealing (57 degrees Celsius), polymerization/extension (75 degrees Celsius)
Term
What does denaturing do?
Definition
Pull apart/cut double-stranded DNA to form single stranded template DNA
Term
What does primer annealing do?
Definition
Match primers against complimentary sequences on all the template DNA strands
Term
What does polymerization do?
Definition
Write in the nitrogen bases (A,C,G,T) that would be added to the primer matching the complimentary bases on the template DNA from the 5' to the 3'
Term
What is the objective of PCR?
Definition
To amplify a small region of DNA
Term
How does the temperature affect the process of PCR?
Definition
Affects the ability of the double-stranded DNA to go through all the processes successfully
Term
What are three uses of PCR?
Definition
Cloning, genetic fingerprinting, and prenatal diagnosis of genetic disease
Term
What does Taq stand for and where do they live?
Definition
Thermus Aquaticus, Hot Springs
Term
What is a primer?
Definition
Small section of DNA that is single stranded
Term
What is the relationship between the number of cut sites and the number of DNA fragments for plasmid DNA?
Definition
They're the same
Term
What is the linear relationship between the number of cut sites and the number of DNA fragments for linear DNA?
Definition
Always one more
Term
What is DNA called when it is a combination of 2 sources?
Definition
Recombinant DNA
Term
What shape is human DNA?
Definition
Linear
Term
What shape is bacterial DNA?
Definition
Circular
Term
What s used to cut the insulin gene out of the human DNA?
Definition
Enzymes
Term
What is an operon?
Definition
Set of genes controlled by an on & off switch
Term
What needs to happen for the tryptophan operon to turn on?
Definition
The tryptophan binds to the repressor protein, then links to the promoter site where RNA polymerase attaches & can go along the gene group to transcribe the genes
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