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21 Cards in this Set
- Front
- Back
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DNA polymerase |
the enzymes that link DNA nucleotides to a growing daughter strand
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DNA ligase |
an enzyme that links pieces into a single DNA strand |
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Transcription
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the synthesis of RNA under the direction of DNA |
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Translation
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the synthesis of protein under the direction of RNA |
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Triplet Code |
base of the flow of information from gene to protein |
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Codons |
non over - lapping three base "words"
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Genetic Code |
the set of rules that relate codons in RNA to amino acids in proteins |
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RNA polymerase |
transcription enzyme |
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Promoter |
the "start transcribing" signal; nucleotide sequence |
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Terminator |
the sequence that signals the end of the gene |
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Messenger RNA (mRNA) |
the kind of RNA that encodes amino acid sequences |
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Intron |
internal non coding regions, "intervening sequences" |
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Exon |
the codon regions- the parts of a gene that are expreesed |
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RNA splicing |
cutting and pasting process |
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Transfer RNA (tRNA) |
the molecular interpreter |
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Anticodon |
complementary to a codon triplet on mRNA |
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Ribosomes
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structures in the cytoplasm that position on mRNA and tRNA close together and catalyze the synthesis of polypeptides |
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Ribosomal RNA (rRNA) |
a kind of RNA |
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Start Codon |
where translation is to begin on the mRNA molecule |
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P site |
holds the growing polypeptides |
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A site |
vacant and ready for next amino acid bearing RNA |
