Question

In three dimensional view the molecule of t-RNA is:

• A. L-shaped
• B. S-shaped
• C. Y-shaped
• D. E-shaped

Answer 1

The Correct Option is A

The question pertains to the three-dimensional structure of the transfer RNA (tRNA) molecule. In order to answer this correctly, we need to understand the conformation of tRNA in three-dimensional space.

Explanation:

Transfer RNA (tRNA) is crucial in the process of translating messenger RNA (mRNA) into protein. It plays an important role in carrying specific amino acids to the ribosome during protein synthesis. The structure of tRNA can be explored at two levels:

• Two-dimensional structure (Cloverleaf model): In this form, the tRNA molecule resembles a cloverleaf structure due to its three stem-loops.
• Three-dimensional structure: In its three-dimensional form, the tRNA folds into an 'L' shape. This occurs because of base pairing and hydrogen bonding that stabilize the structure, allowing it to fit correctly into the ribosome during the protein synthesis process.

The L-shape orientation is crucial because it allows tRNA to fit into the ribosomal binding sites and facilitate the accurate delivery of amino acids. This shape provides the necessary spatial orientation needed for interacting with both the mRNA and the ribosomal elements during translation.

Conclusion: The three-dimensional structure of tRNA is indeed L-shaped. This shape is essential for its biological function in protein synthesis.

Therefore, the correct answer is:

• L-shaped