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HB 1.3
Glossary Flashcards
20
Biology
Not Applicable
08/28/2026

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Term
Amino acid
Definition
unit of polypeptide structure
Term
Anticodon
Definition
sequence of three bases on tRNA that specifies an amino acid
Term
Codon
Definition
sequence of three bases on mRNA that specifies an amino acid
Term
Gene
Definition
sequence of DNA that codes for a protein
Term
Gene expression
Definition
transcription and translation
Term
Intron
Definition
non-coding sequence of DNA
Term
Mature messenger RNA (mRNA)
Definition
carries a copy of the DNA code to a ribosome
Term
Molecular interactions
Definition
various chemical links joining amino acids and giving protein molecules their shape (peptide and hydrogen bonds)
Term
Peptide bonds
Definition
strong chemical links joining the amino acids in a polypeptide chain together
Term
Phenotype
Definition
outward appearance of an organism determined by the proteins produced as a result of gene expression and other environmental factors
Term
Polypeptide
Definition
short strand of amino acids held together by peptide bonds
Term
Primary transcript
Definition
mRNA molecule made when DNA is transcribed
Term
Ribosomal RNA (rRNA)
Definition
type of RNA that makes up ribosomes along with proteins
Term
Ribosome
Definition
site of protein synthesis; composed of rRNA and protein
Term
RNA polymerase
Definition
enzyme involved in synthesis of primary transcripts from DNA
Term
RNA splicing
Definition
joining of exons following the removal of introns from a primary transcript
Term
Transcription
Definition
copying of a DNA sequence to make a primary transcript
Term
Transfer RNA (tRNA)
Definition
transfers specific amino acids to the mRNA on the ribosomes
Term
Translation
Definition
production of a polypeptide from mRNA at the ribosome
Term
Uracil
Definition
RNA base not found in DNA
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