Protein Synthesis and Gene Expression

Front

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.

Front

What is the role of mRNA in protein synthesis?

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mRNA (messenger RNA) carries the genetic information from DNA to the ribosome, where proteins are synthesized.

Front

What is a codon?

Back

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

Front

What is the start codon and its significance?

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The start codon is AUG, which signals the beginning of protein synthesis and codes for the amino acid Methionine.

Front

What is translation in the context of protein synthesis?

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Translation is the process where ribosomes read mRNA sequences and assemble amino acids into polypeptide chains to form proteins.

Front

What is the function of ribosomes in protein synthesis?

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Ribosomes are the cellular machinery that facilitate the translation of mRNA into proteins.

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What is the difference between transcription and translation?

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Transcription is the process of copying DNA into mRNA, while translation is the process of converting mRNA into a protein.

Front

What is the role of tRNA in translation?

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

Front

What is a stop codon?

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A stop codon is a nucleotide triplet that signals the termination of protein synthesis; examples include UAA, UAG, and UGA.

Front

How does DNA control protein synthesis?

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DNA contains the instructions for making proteins, which are transcribed into mRNA and then translated into amino acid sequences.