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CSU BIOL 3216 Chapter 11
Genetics
13
Biology
Undergraduate 3
10/18/2010

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Term
Amino acid
Definition
Any one of twenty different small organic molecules that serves as a building block of polypeptides.
Term
Aminoacyl-tRNA synthetase
Definition
An enzyme that connects the correct amino acid to a tRNA carrying an appropriate anticodon.
Term
Anticodon
Definition
A sequence of three adjacent nucleotides on a tRNA that is antiparallel and complementary to a codon on mRNA.
Term
Codon
Definition
A sequence of three adjacent nucleotides on an mRNA molecule that specifies incorporation of a particular amino acid into a growing polypeptide.
Term
Genetic code
Definition
The set of rules by which the nucleotide sequence in an mRNA is translated into an amino acid sequence in a polypeptide.
Term
Peptide bond
Definition
A covalent bond that connects amino acids in a polypeptide.
Term
Polypeptide
Definition
A long chain of amino acids.
Term
Polyribosome
Definition
An mRNA being actively translated by more than one ribosome at a time.
Term
Protein
Definition
A biological macromolecule that consists of one or more polypeptides.
Term
Ribosome
Definition
Structure in the cytoplasm on which polypeptides are synthesized.
Term
Transfer RNA (tRNA)
Definition
Short RNA molecules that deliver a specific amino acid to a codon on the ribosome during polypeptide synthesis.
Term
Translation
Definition
Process by which information in an mRNA molecule is used to direct the synthesis of a polypeptide.
Term
Wobble
Definition
Flexibility in base-pairing at the 3’ position of a codon with the 5’ position of an anticodon.
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