Chapter 12

STUDY
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What is the function of RNA
makes proteins
process of making RNA from DNA
transcription
process of making proteins based on instructions carried by RNA
translation
carries coded instructions for protein synthesis
messenger RNA
carries specific amino acids to ribosomes during protein assembly
transfer RNA
part of the ribosomes and is where proteins are assembled
ribosomal RNA
copying needed sections of DNA
RNA molecules are produced by
transcription occurs in the
nucleus
in transcription, new RNA is shipped to the
cytoplasm
in transcription, RNA polymerase is the enzyme responsible for
building the new RNA strand
in transcription, many RNA molecules need
editing
in transcription, removed pieces are known as this and are cut out while the RNA is still in the nucleus
introns
in transcription, remaining portions are called this and are stitched together to form the final mRNA
exons
in translation, mRNA is transcribed in the nucleus and then sent out to the
ribosome
translation beings at the start codon:
AUG
the ribosome joins to the new amino acid to this and lets go of the tRNA
polypeptide
the process continues until a "stop" codon:
UAG