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Which of the following is a distinguishing characteristic between eukaryotes and prokaryotes?

A the presence of a nucleus.

A prokaryote does not have a nucleus, whereas a eukaryote has a nucleus. This is one of the most common distinguishing factors between these two types of organisms. Prokaryotes are able to perform many of the same molecular functions that a eukaryote is able to do like: cellular respiration, DNA replication, and protein synthesis. These processes are often less complicated and done quicker in the prokaryotic cell.[Life Science]