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Gene Expression ✔Correct Answer--Process by which DNA directs protein synthesis; transcription
and translation
Transcription ✔Correct Answer--Synthesis of RNA under DNA direction; Produces mRNA; use same
language
Translation ✔Correct Answer--Synthesis of polypeptide under RNA direction; Nucleic acids and
amino acids use different language, Ribosomes are site of translation
Triplet code ✔Correct Answer--Series of three-nucleotides (make amino acids)
Template strand ✔Correct Answer--Provides template for RNA transcription
mRNA base triplets ✔Correct Answer--Codons
Direction codons are read during transcription ✔Correct Answer--5' to 3' direction
RNA Polymerase ✔Correct Answer--Pries DNA strand apart and hooks together RNA nucleotides
Promoter ✔Correct Answer--DNA sequence where RNA Polymerase attaches
Transcription initiation complex ✔Correct Answer--RNA Polymerase 2 bound to a promoter
TATA Box ✔Correct Answer--Crucial in forming initiation complex in eukaryotes
5' end of pre-mRNA molecule ✔Correct Answer--Receives modified nucleotide 5' cap
3' end of pre-mRNA molecule ✔Correct Answer--Gets poly-A tail
RNA Splicing ✔Correct Answer--Removes introns and joins exons, creating mRNA molecule with
continuous coding sequence
tRNA ✔Correct Answer--Helps translate mRNA into protein
aminoacyl-tRNA Synthetase ✔Correct Answer--Matches correct tRNA and amino acid
Where does translation occur? ✔Correct Answer--Large subunit of ribosome
P site ✔Correct Answer--Holds tRNA that carries growing polypeptide chain
A site ✔Correct Answer--Holds tRNA that carries next amino acid to be added to chain
E site ✔Correct Answer--Exit site, where discharged tRNAs leave ribosome
Elongation stage ✔Correct Answer--Amino acids are added one by one to preceding amino acid