Which is one of the most important differences between prokaryotes and eukaryotes? the cytoplasm in eukaryotes does not contain any organelles but that of prokaryotes does. eukaryotes are much smaller than prokaryotes. prokaryotes do not have a well–defined nucleus, but eukaryotes do.

How is ribosomal rna useful as a molecular clock? a. a large portion of the dna ring is not vital to structure or function, allowing it to accumulate neutral mutations. b. its rate of mutation increases over time as organisms continue to evolve and differentiate from each other. c. a slow mutation rate makes it useful for determining evolutionary relationships between ancient species. d. it is only found in select organisms, making it easier to compare relationships between species that have it.

Which of the following forest management practices is best for reestablishing areas of forest?

Which areas of earth receive the most precipitation on average? a. tropics b. temperate zones c. regions near 30? n and s latitudes d. polar zones 1