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The '''Monerans''' are the most numerous and widespread organisms on Earth.

The '''Monerans''' are the most numerous and widespread organisms on Earth.

They comprise the only [[kingdom]] of [[prokaryotic]] organisms, those which lack a [[nucleus]] or other membrane-bounded [[organelle]]s. External to the plasma [[membrane]], most [[bacteria]] have a [[cell]] wall partially composed of peptidoglycan, a complex structural [[molecule]] not found in [[eukaryotic]] cells.<ref>[http://fig.cox.miami.edu/Faculty/Dana/monera.html Kingdom Monera: The Prokaryotes] (University of Miami, Department of biology)</ref>

They comprise the only [[kingdom (biology)|kingdom]] of [[prokaryotic]] organisms, those which lack a [[nucleus]] or other membrane-bounded [[organelle]]s. External to the plasma [[membrane]], most [[bacteria]] have a [[cell]] wall partially composed of peptidoglycan, a complex structural [[molecule]] not found in [[eukaryotic]] cells.<ref>[http://fig.cox.miami.edu/Faculty/Dana/monera.html Kingdom Monera: The Prokaryotes] (University of Miami, Department of biology)</ref>

''Kingdom Monera'' is a [[biological classification]], and consists entirely of the bacteria - very small one-celled organisms. To get an idea of just how small bacteria are, take a look at the width of a [[millimeter]] - the smallest units on the metric side of a ruler. A thousand bacteria can sit side by side in just 1 tiny millimeter! Despite their small size, bacteria are the most abundant of any organism on Earth. And they're everywhere! Bacteria can be found in the air, soil, water, on you, and inside you. In fact, there are more bacterial cells inside your gut and on your [[skin]] than there are cells in your entire body - no matter how many times you try to wash them off.<ref>[http://www.windows.ucar.edu/tour/link=/life/monera.html Kingdom Monera] (Windows to the Universe)</ref>  

''Kingdom Monera'' is a [[biological classification]], and consists entirely of the bacteria - very small one-celled organisms. To get an idea of just how small bacteria are, take a look at the width of a [[millimeter]] - the smallest units on the metric side of a ruler. A thousand bacteria can sit side by side in just 1 tiny millimeter! Despite their small size, bacteria are the most abundant of any organism on Earth. And they're everywhere! Bacteria can be found in the air, soil, water, on you, and inside you. In fact, there are more bacterial cells inside your gut and on your [[skin]] than there are cells in your entire body - no matter how many times you try to wash them off.<ref>[http://www.windows.ucar.edu/tour/link=/life/monera.html Kingdom Monera] (Windows to the Universe)</ref>