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21 Cards in this Set
- Front
- Back
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Ribonucleic Acid
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a nucleic acid / a molecule made of nucleotides linked together
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uracil
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nitrogen base
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transcription
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the process of forming another nuclleic acic by using another molecule as a template
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RNA polymerase
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an enzyme that adds and links complementary RNA nucleotides during transcription.
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messenger RNA
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is a form of RNA that carries the instructions for making a protein from a gene and delivers it to the sit of translation.
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condons
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a series of three nucleotide sequences on the mRNA
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genetic code
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the amino acids and "start" and "stop" signals that are coded for by each of the possible 64N mRNA condons
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lac operan
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the operon that controls the metabolism of lactose
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repressor
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A protein that binds to an operator and physically blocks RNA polymerase from binding to a protein site
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operator
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a piece of DNA that overlayers the promoter site and serves as the on/off switch
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Transcription
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process which takes information found in the DNA and transfers it to a molecule of RNA
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Ribsomal RNA
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RNA Molecules that are part of the structure of ribosomes
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Point Mutation
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A mutation in which only one nucleotide or nitrogenous base in a gene is changed
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Transfer RNA
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tRNA single strands of RNA that temporarily carry a specific amino acid on one end
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anticondon
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3 nucleotide sequence on a tRNA that is complementary to an mRNA codon
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Introns
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A section of the DNA that does not code for amino acid
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Exons
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The portion of the DNA sequence in a gene that contains the sequence of amino acids
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gene Expression
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The entire process by which proteins are made. based on info encoded in DNA?Progein synthesis
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Translation
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A Process using RNA putting together amino acids to make up the protein
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Transcription
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A process which Instructions for making protein are transfered to an RNA molecule
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operon
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a unit of gene regulation and transcription in bacterial DNA that consists of a promoter site and the operator that controls them all
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