State the roles of AUG codon at 5' end UAG at 3' end of a certain m-RNA during translation.

Explanation

### Step-by-Step Solution:

1. **Understanding Translation**:
- Translation is the process of decoding mRNA to synthesize proteins. It involves the ribosome reading the mRNA sequence and assembling amino acids in the correct order to form a polypeptide chain.

2. **Role of AUG Codon at the 5' End**:
- The AUG codon is located at the 5' end of the mRNA.
- It is known as the **start codon** because it signals the beginning of translation.
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