Bacteria
KINGDOMS ARCHAEBACTERIA & EUBACTERIA All Materials © Cmassengale Bacterial Evolution & Classification Most numerous organisms on earth Earliest life forms (fossils date 2.5 billion years old) Microscopic prokaryotes (no nucleus nor membrane-bound organelles) Contain ribosomes Infoldings of the cell membrane carry on photosynthesis & respiration Surrounded by protective cell wall containing peptidoglycan (protein-carbohydrate) Many are … Continue reading “Bacteria”
