Protein Synthesis and Mutation L.16.4-L.16.5

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What is protein synthesis?

Back

The process by which cells generate new proteins, involving transcription of DNA to mRNA and translation of mRNA to amino acids.

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What is a mutation?

Back

A change in the DNA sequence that can lead to changes in the structure and function of proteins.

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What are ribosomes?

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Cellular structures that synthesize proteins by translating mRNA into amino acid sequences.

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What is transcription?

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The process of copying a segment of DNA into RNA, specifically mRNA, which carries the genetic information to the ribosome.

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What is translation?

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The process by which ribosomes read mRNA sequences and assemble amino acids into polypeptide chains to form proteins.

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What is a codon?

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A sequence of three nucleotides in mRNA that specifies a particular amino acid.

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What is the role of tRNA in protein synthesis?

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tRNA (transfer RNA) transports specific amino acids to the ribosome during translation, matching its anticodon with the mRNA codon.

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What is the significance of the start codon?

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The start codon (AUG) signals the beginning of translation and codes for the amino acid methionine.

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What is a stop codon?

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A codon that signals the termination of protein synthesis, indicating that the polypeptide chain is complete.

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How does a point mutation affect protein synthesis?

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A point mutation can change a single nucleotide in the DNA sequence, potentially altering the amino acid sequence of the resulting protein.