19,879
edits
Changes
no edit summary
==Key Stage 3==
===Meaning===
[[File:Bacteria.png|right|300px|thumb|A magnified image of several '''bacteria'''.]]
Bacteria are [[unicellular]] [[microorganism]]s that have no [[nucleus]], [[mitochondria]] or [[chloroplast]] but do have [[cytoplasm]], a [[cell membrane]] and a [[cell wall]].