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Definition
a segment of a DNA molecule that contains the information required for the synthesis of a functional biological product (either protein or RNA) |
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intermediaries that carry genetic information from one or a few genes to a ribosome where the corresponding proteins can be synthesize |
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adapter molecules that translate the information in mRNA into a specific sequence of amino acids |
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Term
3 characteristic components of a nucleic acid |
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Definition
1. a nitrogenous base 2. a pentose 3. one or more phosphates |
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2 parent compounds for the nitrogenous bases of nucleic acids |
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2 major purine bases in DNA & RNA |
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Definition
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What is the difference between the pyrimidine bases of DNA & the pyrimidine bases of RNA? |
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Definition
DNA = cytosine & thymine
RNA = cytosine & uracil |
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What is the difference between deoxyribonucleotides & ribonucleotides? |
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Definition
deoxyribonucleotides = the structural units of DNAs
ribonucleotides = the structural units of RNAs |
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Definition
the 5'-phosphate group of one nucleotide unit is joined to the 3'-hydroxyl group of the next nucleotide; the phosphate-group "bridges" that covalently link the successive nucleotides of both DNA & RNA |
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What is the difference between the 5' end & the 3' end? |
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Definition
5' end = lacks a nucleotide at the 5' position
3' end = lacks a nucleotide at the 3' position |
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Where are nucleotide-binding fold domains found? |
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Definition
in enzymes that bind ATP & nucleotide cofactors |
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