Final answer:
No, the isolated RNA polymerase from a eukaryotic cell cannot be identified without analyzing its products. Functional assays are required to determine its identity.
Step-by-step explanation:
No, the isolated RNA polymerase from a eukaryotic cell cannot be identified without analyzing its products. Unlike prokaryotes, eukaryotic cells use different RNA polymerases to catalyze the synthesis of different types of RNA, such as ribosomal RNA (rRNA), transfer RNA (tRNA), and messenger RNA (mRNA). Each RNA polymerase has a specific function and cannot be distinguished based on size alone. Therefore, functional assays are required to determine the identity of the isolated RNA polymerase.