A(n) ________ is composed of two nucleotide strands that, like a spiral step, are wounded around one another.
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Protein
________ is synthesized in the ribosomes in three steps: initiation, chain elongation, and termination.
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TRNAs
________ provide the right ribosome amino acids and peptide bonds during translation to join amino acids to a peptide chain.
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genetic code
The ________ consists of a number of codons, three- base sequences that specify the order in a protein for amino acids.
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Polymerase Chain Reaction
The ________ produces large amounts of DNA in criminal investigations.
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nucleotide
There are three components of a(n) ________: a pentose, a base, and a phosphate group.
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AIDS treatment
In ________, inhibitors block the entry into the cell by the virus, nucleoside analogs inhibit the reverse HIV transcriptase and protease inhibitors interrupt the protease catalytic activity needed to produce proteins to synthesize more viruses.
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nucleoside
A(n) ________ is a pentose sugar and a base combination.
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DNA
In ________, adenine, thymine, guanine, or cytosine may be the base of sugar.
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AUG codon
The ________ indicates beginning the transcription, which is stopped by the UAG, UGA, and UAA codons.
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MRNA
________ is produced when certain proteins are necessary in the cell.
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nucleic acid
Each ________ has a unique base sequence called its primary structure.
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amino acids
The 20 ________ have 64 codons, meaning that most amino acids have multiple codons.
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genetic mutation
A(n) ________ is a change in one or more DNA sequence bases that can change the proper function of the structure and ability of the resulting protein.
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viral DNA
The ________ is synthesized in the host cell with the nucleotides and enzymes for a retrovirus containing RNA.
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protein
The ________ expressed by the foreign DNA segment is produced as the changed bacterial cells replicate.
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DNA
The foundations of mRNA are complementary to ________, except that A in ________ and U in RNA are matched.
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DNA
________ or RNA viruses must invade host cells to synthesize more viruses using machinery in cells.
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