<P> Prokaryotes lack membrane - bound organelles , such as mitochondria or a nucleus . Instead , most prokaryotes have an irregular region that contains DNA , known as the nucleoid . Most prokaryotes have a single , circular chromosome , which is in contrast to eukaryotes , which typically have linear chromosomes . Nutritionally , prokaryotes have the ability to utilize a wide range of organic and inorganic material for use in metabolism , including sulfur , cellulose , ammonia , or nitrite . Prokaryotes as a whole are ubiquitous in the environment and exist in extreme environments as well . </P>
<P> Prokaryotes lack membrane - bound organelles , such as mitochondria or a nucleus . Instead , most prokaryotes have an irregular region that contains DNA , known as the nucleoid . Most prokaryotes have a single , circular chromosome , which is in contrast to eukaryotes , which typically have linear chromosomes . Nutritionally , prokaryotes have the ability to utilize a wide range of organic and inorganic material for use in metabolism , including sulfur , cellulose , ammonia , or nitrite . Prokaryotes as a whole are ubiquitous in the environment and exist in extreme environments as well . </P>
abundant and diverse organisms that lack membrane bound organelles
abundant and diverse organisms that lack membrane bound organelles
Prokaryotes
Prokaryotes