In the student's model comparing transcription and translation to a grocery store process, the object that represents tRNA is "The shopper."
Here's the reasoning:
- In the biological process of translation, tRNA (transfer RNA) is responsible for transporting amino acids to the ribosome, where the mRNA (the grocery list) is translated into a protein (the assembled order).
- The shopper, in this analogy, is like tRNA because they are the ones who physically pick up the items (amino acids) specified on the grocery list (mRNA) and bring them to the checkout (the ribosome), where the order (protein) is assembled.
Therefore, the correct answer is "The shopper."