Which features characterize all prokaryotes?

A) photosynthetic
B) multicellular
C) has nuclei
D) resides in extreme environments
E) lacks nuclei

Prokaryotes lack nuclei, which is a defining characteristic of this group of organisms. They also lack membrane-bound organelles and have a simpler cellular structure compared to eukaryotes. Prokaryotes can be either single-celled or colonial and can be found in a wide range of environments, including extreme habitats such as hot springs, deep-sea hydrothermal vents, and acidic or alkaline environments. Prokaryotes can be either autotrophic or heterotrophic and can carry out a variety of functions including metabolism, respiration, and reproduction.