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Published byBenny Budiman Modified over 6 years ago
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KEY CONCEPT Translation converts an mRNA message into a polypeptide, or protein.
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Triplet code Codon = 3 mRNA bases =codon chart…use mRNA to code
Reading Frame = code for AA’s in 3’s Common Language: Shared genetic code Codon = 3 mRNA bases =codon chart…use mRNA to code Start codon = methionine = AUG Stop Codon= signals to stop making protein Ribosome -tRNA moves AA there -Where proteins are made Anticodon= 3 tRNA bases tRNA = Transfer the AA to ribosomes
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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
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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.
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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.
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Ribosomes consist of two subunits.
The large subunit has three binding sites for tRNA. The small subunit binds to mRNA.
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1. tRNA binds to a START codon (UAG = methionine) and signals the ribosome to assemble.
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2. The ribosome helps form a polypeptide bond between the amino acids.
3. The ribosome pulls the mRNA strand the length of one codon and a new tRNA binds
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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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