Question

which statement best compares transcription and translation?
○ trna pairs with complementary mrna in both transcription and translation.
○ a peptide bond is created between amino acids in both transcription and translation.
○ dna is transcribed into a complementary strand of mrna in translation but not transcription.
○ a chain of amino acids linked by peptide bonds is formed in translation but not transcription.

Explanation:

1. Analyze the first option: tRNA is involved in translation (pairing with mRNA), but transcription is DNA to mRNA, so tRNA doesn't pair with mRNA in transcription. Eliminate this option.
2. Analyze the second option: Peptide bonds are formed between amino acids during translation (protein synthesis), but transcription is about RNA synthesis, no peptide bonds there. Eliminate this option.
3. Analyze the third option: DNA is transcribed into mRNA during transcription, not translation. This statement has the process reversed. Eliminate this option.
4. Analyze the fourth option: Transcription produces mRNA from DNA, while translation uses mRNA to assemble a chain of amino acids (polypeptide) linked by peptide bonds. This accurately describes the difference between the two processes.

Answer:

D. A chain of amino acids linked by peptide bonds is formed in translation but not transcription.