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What is the significance of the start codon?

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Question: What is the significance of the start codon?

Options:

  1. It signals the end of translation
  2. It codes for a stop signal
  3. It initiates protein synthesis
  4. It regulates gene expression

Correct Answer: It initiates protein synthesis

Solution: 

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

What is the significance of the start codon?

Practice Questions

Q1
What is the significance of the start codon?
  1. It signals the end of translation
  2. It codes for a stop signal
  3. It initiates protein synthesis
  4. It regulates gene expression

Questions & Step-by-Step Solutions

What is the significance of the start codon?
  • Step 1: Understand that a codon is a sequence of three nucleotides in mRNA.
  • Step 2: Identify the start codon, which is AUG.
  • Step 3: Know that the start codon signals the beginning of the process called translation.
  • Step 4: Recognize that translation is when the cell makes proteins from mRNA.
  • Step 5: Learn that the start codon also codes for the amino acid methionine, which is the first amino acid in the protein chain.
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