* They lack a nucleus and other membrane-bound organelles. This is a key defining characteristic of prokaryotes. Their DNA is located in a region called the nucleoid, but it's not enclosed within a membrane.
* They are typically smaller than eukaryotic cells. Prokaryotes are generally much smaller, ranging from 0.1 to 10 micrometers in diameter.
* They have a cell wall. This rigid outer layer provides structural support and protection. The composition of the cell wall can vary between different types of bacteria (e.g., peptidoglycan in bacteria).
* They reproduce asexually through binary fission. Prokaryotes divide into two identical daughter cells through a simple process called binary fission.
* They are found in a wide variety of environments. Prokaryotes are incredibly diverse and can thrive in extreme environments, including hot springs, deep sea vents, and even the human gut.
* They can be classified as bacteria or archaea. These are the two main domains of prokaryotes.
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