Final answer:
A peptidyl-tRNA can have an amino acid linked to it through its 3'OH group, but typically does not have a polymer of hundreds of amino acids attached. The polymer of amino acids is formed by the ribosome during protein synthesis.
Step-by-step explanation:
A peptidyl-tRNA is a tRNA molecule that has an amino acid attached to it. The amino acid is linked to the tRNA through its 3'OH group. This linkage allows the peptidyl-tRNA to participate in the process of protein synthesis, where the amino acid is added to the growing polypeptide chain.
It is important to note that a peptidyl-tRNA typically has only one amino acid attached to it, rather than a polymer of hundreds of amino acids. The polymer of amino acids is formed by the ribosome, which catalyzes the formation of peptide bonds between successive amino acids.