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DNA, RNA, and Protein Synthesis TEST
Derp
21
Biology
9th Grade
02/02/2012

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Term
DNA
Definition
double stranded nucleic acid that stores heredity information
Term
RNA
Definition
a single stranded nucleic acid involved in protein synthesis
Term
mRNA
Definition
form of RNA that carries the instructions for making a protein from a gene on DNA to the ribosome
Term
tRNA
Definition
type of RNA that temporarily carries a specific amino acid on one end and takes it to the ribosome
Term
rRNA
Definition
type of RNA that is part of the structure of the ribosomes
Term
transcription
Definition
transfer of instructions for making a protein from a gene to an RNA molecule
Term
translation
Definition
process in which the information in mRNA is used to make the protein
Term
codon
Definition
a triplet of bases on mRNA that code for an amino acid
Term
anticodon
Definition
a triplet of bases on a tRNA molecule
Term
polypeptide
Definition
a long chain of amino acids produced by translation; protein
Term
intron
Definition
long segments of nucleotides that have no coding information
Term
exon
Definition
the portions of genes that are translated (expressed) into proteins
Term
primary structure
Definition
a long chain of amino acids; very simple
Term
secondary structure
Definition
sequences of amino acids are linked by hydrogen bonds; from a pleated sheet or an alpha helix; more complex
Term
tertiary structure
Definition
occurs when certain attractions are present between alpha helices and pleated sheets; more complex
Term
quaternary structure
Definition
a protein consisting of more than 1 amino acid; most complex
Term
mutations
Definition
changes that occur in DNA, genes, and chromosomes
Term
mutagen
Definition
an agent that causes mutations
Term
point mutation
Definition
a change in 1 base
Term
frame-shift mutation
Definition
1 or more bases are inserted or deleted
Term
inversion
Definition
an entire selection of DNA is reversed
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