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KEY CONCEPT Translation converts an mRNA message into a polypeptide, or protein. - PowerPoint PPT Presentation


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KEY CONCEPT Translation converts an mRNA message into a polypeptide, or protein. codon for methionine (Met). codon for leucine (Leu). Amino acids are coded by mRNA base sequences. Translation converts mRNA messages into polypeptides.

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Key concept translation converts an mrna message into a polypeptide or protein

KEY CONCEPT Translation converts an mRNA message into a polypeptide, or protein.


Amino acids are coded by mrna base sequences

codon for

methionine (Met)

codon for

leucine (Leu)

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.


Key concept translation converts an mrna message into a polypeptide or protein

The genetic code matches each RNA codon with its amino acid or function.

  • The genetic code matches each codon to its amino acid or function.

  • three stop codons

  • one start codon, codes for methionine


Key concept translation converts an mrna message into a polypeptide or protein

  • Regardless of the organism, codons code for the same amino acid.


Amino acids are linked to become a protein
Amino acids are linked to become a protein. resulting protein.

  • An anticodon is a set of three nucleotides that is complementary to an mRNA codon.

  • An anticodon is carried by a tRNA.


Key concept translation converts an mrna message into a polypeptide or protein

  • The large subunit has three binding sites for tRNA.

  • The small subunit binds to mRNA.


Key concept translation converts an mrna message into a polypeptide or protein

  • A complementary tRNA molecule binds to the exposed codon, bringing its amino acid close to the first amino acid.


Key concept translation converts an mrna message into a polypeptide or protein

  • The ribosome pulls the mRNA strand the length of one codon.


Key concept translation converts an mrna message into a polypeptide or protein

  • A complementary tRNA molecule binds to the next exposed codon.

  • Once the stop codon is reached, the ribosome releases the protein and disassembles.