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Select an incorrect statement...

Select an incorrect statement

A

In bacteria, there are three major types of RNAs

B

All three RNAs are needed to synthesise a protein in a cell.

C

tRNAs doesn't play structural and catalytic role during translation.

D

The mRNA provides the template during protein synthesis

Text Solution

AI Generated Solution

The correct Answer is:
To solve the question of selecting an incorrect statement regarding RNA types and their functions in protein synthesis, we can follow these steps: ### Step-by-Step Solution: 1. **Identify the Statements**: We have four statements regarding RNA types and their roles in protein synthesis. We need to evaluate each one to determine which is incorrect. 2. **Evaluate Statement 1**: - **Statement**: "In bacteria, there are 3 major types of RNAs." - **Analysis**: This statement is correct. Bacteria indeed have three major types of RNA: mRNA (messenger RNA), rRNA (ribosomal RNA), and tRNA (transfer RNA). All three play crucial roles in protein synthesis. 3. **Evaluate Statement 2**: - **Statement**: "All 3 RNAs are needed to synthesize a protein in a cell." - **Analysis**: This statement is also correct. mRNA provides the template, rRNA forms the structure of ribosomes, and tRNA brings amino acids to the ribosome for protein synthesis. 4. **Evaluate Statement 3**: - **Statement**: "tRNA doesn't play a structural and catalytic role in translation." - **Analysis**: This statement is incorrect. tRNA does play a structural role as it helps in the assembly of amino acids into a polypeptide chain and is essential for translation. Therefore, this statement is the one we are looking for. 5. **Evaluate Statement 4**: - **Statement**: "mRNA provides a template during protein synthesis." - **Analysis**: This statement is correct. mRNA serves as a template that dictates the sequence of amino acids in a protein based on its nucleotide sequence. 6. **Conclusion**: After evaluating all statements, the incorrect statement is Statement 3: "tRNA doesn't play a structural and catalytic role in translation." ### Final Answer: The incorrect statement is **Statement 3**. ---
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