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Prentice Hall- Miller/ Levine
ch. 12: DNA and RNA
6
Biology
9th Grade
06/02/2007

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Term
DNA replication



PG 298
Definition
*the process of duplicating a DNA strand
*in this process, the double-helix structure of the DNA strand "unzips" and each strand serves as a template
*DNA polymerase
Term
DNA polymerase



PG 298
Definition
*an enzyme used in DNA replication
*this enzyme binds together individual nucleotides which creates the new strand of DNA
*it also "proofreads" each new strand
Term
transcription



PG 301
Definition
*the process by which an RNA strand is created by using a DNA strand
*RNA polymerase
Term
RNA polymerase



PG 301
Definition
*during transcription, this enzyme separates the two DNA strands then uses one of the strands as a template to assemble the RNA strand out of nucleotides
Term
exons



PG 302
Definition
*the DNA sequences that code for a protein, therefore, they do not get "edited" out of the RNA sequence during transcription
Term
introns



PG 302
Definition
*sequences of DNA that do not code for any proteins, therefore, they get "edited" out of the RNA sequence during transcription
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