translation Flashcards
in eukaryotes what is copied into mRNA during transcription
introns and exons
is pre-mRNA
mRNA contsining introns and exons
what happens in splicing
introns are removed and the exons joined together forming mRNA strands. This takes place in the nucleus.The mRNA then leaves the nucleus for the next stage of protein synthesis
in prokaryotes where is mRNA produced from
mRNA in the nucleus is produced directly from the DNA wihtout splicing taking place
in both prokaryotes and eukaryotes where does translation take place
the ribosomes in the cytoplasm
during translation what happens to amino acids
amino acids are joined together to make a polypeptide chain following the sequence of codons carried by the mRNA
what does mRNA attach itself to in translation
it attaches itself to a ribososme and transfer RNA molecules carry amino acids to it
what provides the energy needed for the bond between the amino acid and the tRNA to form
ATP
in translation what attaches to the mRNA by specific base pairing
a tRNA molecule with an anticodon that complementary to the first codon on the mRNA
what does a second tRNA molecule attach itself to
the next codon on the mRNA in the same way
what type of bond are the two amino acids attached to the tRNA molecules joined by
a peptide bond
what does the first tRNA molecule do
moves away leaving its amino acid behind
what does the third tRNA molecule bind to
the next codon on the mRNA. Its amino acid binds to the first two and the second tRNA molecule moves away
when does translation produce a chain linked of amino acids until
until there’s a stop signal on the mRNA molecule
what does the polypeptide chain do at the end of translation
moves away from the ribosome
