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8.5 Translation
KEY CONCEPT
Translation converts an mRNA message into a
polypeptide, or protein.
8.5 Translation
Amino acids are coded by mRNA base sequences.
• Translation converts mRNA messages into polypeptides.
• A ...
8.5 Translation
• The genetic code matches each codon to its amino acid or
function.
The genetic code matches each RNA cod...
8.5 Translation
• A change in the order in which codons are read changes
the resulting protein.

• Regardless of the organ...
8.5 Translation
Amino acids are linked to become a protein.
• An anticodon is a set of three nucleotides that is
complemen...
8.5 Translation
• Ribosomes consist of two subunits.
– The large subunit has three binding sites for tRNA.
– The small sub...
8.5 Translation
• For translation to begin, tRNA binds to a start codon and
signals the ribosome to assemble.
– A compleme...
8.5 Translation
– The ribosome helps form a polypeptide bond between
the amino acids.
– The ribosome pulls the mRNA strand...
8.5 Translation
– The now empty tRNA molecule exits the ribosome.
– A complementary tRNA molecule binds to the next
expose...
8.5 Translation
– The now empty tRNA molecule exits the ribosome.
– A complementary tRNA molecule binds to the next
expose...
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Translation

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Transcript of "Translation"

  1. 1. 8.5 Translation KEY CONCEPT Translation converts an mRNA message into a polypeptide, or protein.
  2. 2. 8.5 Translation Amino acids are coded by mRNA base sequences. • Translation converts mRNA messages into polypeptides. • A codon is a sequence of three nucleotides that codes for an amino acid. codon for methionine (Met) codon for leucine (Leu)
  3. 3. 8.5 Translation • The genetic code matches each codon to its amino acid or function. The genetic code matches each RNA codon with its amino acid or function. – three stop codons – one start codon, codes for methionine
  4. 4. 8.5 Translation • A change in the order in which codons are read changes the resulting protein. • Regardless of the organism, codons code for the same amino acid.
  5. 5. 8.5 Translation Amino acids are linked to become a protein. • An anticodon is a set of three nucleotides that is complementary to an mRNA codon. • An anticodon is carried by a tRNA.
  6. 6. 8.5 Translation • Ribosomes consist of two subunits. – The large subunit has three binding sites for tRNA. – The small subunit binds to mRNA.
  7. 7. 8.5 Translation • For translation to begin, tRNA binds to a start codon and signals the ribosome to assemble. – A complementary tRNA molecule binds to the exposed codon, bringing its amino acid close to the first amino acid.
  8. 8. 8.5 Translation – The ribosome helps form a polypeptide bond between the amino acids. – The ribosome pulls the mRNA strand the length of one codon.
  9. 9. 8.5 Translation – The now empty tRNA molecule exits the ribosome. – A complementary tRNA molecule binds to the next exposed codon. – Once the stop codon is reached, the ribosome releases the protein and disassembles.
  10. 10. 8.5 Translation – The now empty tRNA molecule exits the ribosome. – A complementary tRNA molecule binds to the next exposed codon. – Once the stop codon is reached, the ribosome releases the protein and disassembles.
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