Final answer:
Introns are removed during RNA processing, not during translation. The ribosome does not play a role in intron removal; this occurs before the mRNA is translated.
Step-by-step explanation:
The statement that does not occur during translation in eukaryotes is introns are removed by the ribosome. During the translation process, charged tRNAs do enter the A site of the ribosome, base pairing between tRNAs and the mRNA happens, the growing polypeptide chain indeed adds amino acids at its carboxyl end, and tRNAs without an amino acid leave the ribosome through the E site. However, the removal of introns occurs during RNA processing, before the mRNA is exported to the cytoplasm and translated. So, this process is not a part of translation, but rather part of gene expression prior to translation.