3⁰ A 5 A GC G G A UA A/C UGU P Examine the tRNA above. Which codon on the mRNA strand codes for this anticodon? 5'-UUC-3' O 5'-GUA-3' O 5'-UGG-3' 3'-GUG-5'
3⁰ A 5 A GC G G A UA A/C UGU P Examine the tRNA above. Which codon on the mRNA strand codes for this anticodon? 5'-UUC-3' O 5'-GUA-3' O 5'-UGG-3' 3'-GUG-5'
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Transcribed Image Text:**Question:**
Examine the tRNA above. Which codon on the mRNA strand codes for this anticodon?
**Image Description:**
The image shows a tRNA molecule, which is a type of RNA that helps decode a messenger RNA (mRNA) sequence into a protein. The tRNA structure appears in three distinct stem-loops, forming a cloverleaf structure. At the bottom, it shows an anticodon sequence which reads from 3' to 5'. The image shows nucleotide sequences within each segment of the tRNA, composed of the bases Adenine (A), Cytosine (C), Guanine (G), and Uracil (U).
**Diagram Explanation:**
1. **Top Stem (Left to Right from 5' to 3'):**
- Sequence: G, C, G, C, U, A, A, A, A, A, C, C, C
2. **Left Stem (Bottom to Top from 3' to 5'):**
- Sequence: G, A, C, U, C, G
3. **Right Stem (Bottom to Top from 3' to 5'):**
- Sequence: G, C, G, U, C, U, G, U, G, G, G
4. **Bottom Anticodon Stem (Left to Right from 3' to 5'):**
- Sequence: (anticodon) G, A, A
**Multiple Choice Options:**
A. 5'-UUC-3'
B. 5'-GUA-3'
C. 5'-UGG-3'
D. 3'-GUG-5'
**Correct Answer:**
A. 5'-UUC-3'

Transcribed Image Text:### Anticodon and mRNA Codon Recognition
To understand how tRNA and mRNA interact during protein synthesis, examine the provided tRNA structure.
#### Diagram Description:
The diagram displays the typical cloverleaf structure of a tRNA molecule, highlighting its four arms and the connecting loop regions. These regions include:
1. **Acceptor Stem**: The top portion is labeled from 5' (five prime) to 3' (three prime) with nucleotide sequences.
2. **D-Loop**: The left loop of the tRNA.
3. **Anticodon Loop**: The bottom loop containing the anticodon sequence.
4. **Variable Loop**: Sometimes present, located between the anticodon and the TΨC loop.
5. **TΨC Loop**: The right loop of the tRNA.
6. **Anticodon**: Within the anticodon loop, the sequence of nucleotides complementary to the codon on the mRNA is displayed.
The specific anticodon in this image is visible in the anticodon loop area facing downwards in the cloverleaf structure. The sequence is read from 3' end to 5' end on the tRNA to interact with the complementary codon on the mRNA read from 5' end to 3'.
### Question:
Examine the tRNA above. Which codon on the mRNA strand codes for this anticodon?
### Options:
1. 5'-UUC-3'
2. 5'-GUA-3'
3. 5'-UGG-3'
4. 3'-GUG-5'
### Detailed Explanation:
- The anticodon in the tRNA molecule complements the mRNA codon.
- The anticodon sequence visible in the loop is 3'-AAG-5'.
- To find the mRNA codon matching this anticodon, reverse complement the sequence to get 5'-UUC-3'.
Thus, the correct mRNA codon corresponding to the anticodon 3'-AAG-5' is **5'-UUC-3'**.
### Correct Answer:
- **5'-UUC-3'**
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