Problem Description:
The image provided is a worksheet titled "Protein Synthesis Practice." It involves translating an RNA sequence into an amino acid sequence using the genetic code. The task requires filling in the codons, identifying the corresponding amino acids, and determining the final protein sequence.
Key Components of the Worksheet:
1.
RNA Sequence: The RNA sequence given is `AUG UUU GGU CUC UAG`.
2.
Codon Table: A circular table showing the genetic code, where each codon (a sequence of three nucleotides) corresponds to a specific amino acid.
3.
Worksheet Sections:
-
Codons: Break down the RNA sequence into groups of three nucleotides.
-
Amino Acids: Identify the amino acid for each codon using the codon table.
-
Final Protein: Write down the sequence of amino acids that form the protein.
Solution Approach:
#### Step 1: Break Down the RNA Sequence into Codons
The RNA sequence is `AUG UUU GGU CUC UAG`. Each codon consists of three nucleotides. Breaking it down:
- Codon 1: `AUG`
- Codon 2: `UUU`
- Codon 3: `GGU`
- Codon 4: `CUC`
- Codon 5: `UAG`
#### Step 2: Identify the Amino Acid for Each Codon
Using the codon table provided in the image:
-
Codon 1: `AUG`
- Corresponds to
Methionine (Met).
-
Codon 2: `UUU`
- Corresponds to
Phenylalanine (Phe).
-
Codon 3: `GGU`
- Corresponds to
Glycine (Gly).
-
Codon 4: `CUC`
- Corresponds to
Leucine (Leu).
-
Codon 5: `UAG`
- This is a
stop codon. Stop codons signal the end of translation and do not code for any amino acid.
#### Step 3: Write Down the Final Protein Sequence
The amino acids corresponding to the codons are:
- Methionine (Met)
- Phenylalanine (Phe)
- Glycine (Gly)
- Leucine (Leu)
Since `UAG` is a stop codon, translation stops after the Leucine (Leu).
Final Answer:
The final protein sequence is:
```
Met-Phe-Gly-Leu
```
Explanation:
1.
Start Codon (`AUG`): Marks the beginning of translation and codes for Methionine.
2.
Elongation: Each subsequent codon is translated into its corresponding amino acid until a stop codon is encountered.
3.
Stop Codon (`UAG`): Signals the end of translation. No further amino acids are added after this point.
Thus, the complete protein sequence is
Met-Phe-Gly-Leu.
Final Boxed Answer:
\[
\boxed{\text{Met-Phe-Gly-Leu}}
\]
Parent Tip: Review the logic above to help your child master the concept of protein synthesis activity worksheet.