Which of the following is incorrect in relation to an adapter molecule ?

Options

A. It has an anticodon loop that has bases complementary to the code
B. It is also called tRNA .
C. It has an amino acid acceptor end which it binds to amino acid.
D. It shows an inverted L - Shaped 2 -D structure .

Answer

To solve the question "Which of the following is incorrect in relation to an adapter molecule?", we will analyze the properties of the adapter molecule, which is commonly known as transfer RNA (tRNA), and evaluate the provided statements.

### Step 1: Understand the Role of Adapter Molecules
- Adapter molecules, specifically tRNA, play a crucial role in protein synthesis. They help translate the genetic code from mRNA into a sequence of amino acids to form proteins.

**Hint:** Recall that tRNA is involved in the translation phase of protein synthesis.

### Step 2: Identify the Structure of tRNA
- tRNA has a characteristic L-shaped structure. It consists of an anticodon loop that pairs with codons on the mRNA and an amino acid attachment site.

**Hint:** Visualize the L-shape of tRNA and remember its two functional ends: one for the anticodon and one for the amino acid.

### Step 3: Analyze the Statements
1. **Statement 1:** It has an anticodon loop that has bases complementary to the codon.
- This statement is correct. The anticodon on tRNA pairs with the corresponding codon on mRNA.

2. **Statement 2:** It is also called tRNA.
- This statement is correct. The term "adapter molecule" is synonymous with tRNA.

3. **Statement 3:** It has an amino acid receptor that binds to the amino acid.
- This statement is correct. tRNA has a specific site for amino acid attachment.

4. **Statement 4:** It shows an inverted L-shaped 2D structure.
- This statement is incorrect. tRNA has a standard L-shaped structure, not an inverted L shape.

**Hint:** Compare each statement with the known characteristics of tRNA to identify the incorrect one.

### Step 4: Conclusion
- The incorrect statement regarding the adapter molecule (tRNA) is that it shows an inverted L-shaped structure. The correct structure is simply L-shaped.

**Final Answer:** The incorrect statement is that it shows an inverted L-shaped 2D structure.