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What provides the roadmap for making proteins
DNA
What is DNA translated to
messenger RNA (mRNA)
What does mRNA direct
the building of the protein, one amino acid at a time
When does translation occur
when the mRNA strand moves out of the nucleus and into the cytoplasm
What molecules come together at this point
mRNA, rRNA, and tRNA
What is the factory of translation
rRNA
What is the worker of translation
tRNA
What is the messenger of translation
mRNA
What are the two parts of rRNA
the large ribosomal unit and the small ribosomal unit
What sites are on the large ribosomal unit
A site and P site
What does the small ribosomal unit contain
A site and P site
What are the sites of polypeptide synthesis and elongation
A site and P site
What do these sites serve as
sites of polypeptide synthesis and elongation
What do tRNA molecules have
an amino acid attachment site and an anticodon
What is the anticodon
the complementary nucleotide sequence to a given codon
What does tRNA pick up in the cytoplasm
the appropriate amino acid coded for by the mRNA codon and to which its anticodon matches
In translation, how does the mRNA run through the rRNA
from the 5’ end (with AUG) to the termination codon at the 3’ end
What is the first codon
AUG
Where will the first codon start
in the A site
What anticodon will meet up with the start codon
UAC
What amino acid is brought by the tRNA with anticodon UAC
methionine
Where will the complex move after the start codon step is complete
to the P site
What happens when the next codon moves in
it connects with its tRNA and appropriate amino acid
What bond is formed between the two amino acids in the rRNA
peptide bond
What happens to the first tRNA at this point
it disconnects from its UAC amino acid and goes back into the cytoplasm
What does the second tRNA with the small elongating polypeptide attached do
it moves into the P site
What enters the rRNA as the process continues
the third codon
How will the process happen when the third codon enters
the same as before
How does the assembly-line fashion continue
with the polypeptide chain elongating all the time
When will translation stop
when a stop or termination codon enters the A site
What happens when translation stops
the completed polypeptide chain disconnects to be folded into a complete protein
What happens to the rRNA after translation
it floats off to be used in other translations
What happens to the mRNA after translation
it is used in other transcriptions
How is each amino acid specified
by a sequence of 3 nucleotides, a word in the vocabulary of the genome