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Bacteria Classification Chapter 7 – Section 1 Kingdoms • Bacteria are classified into two kingdoms: – Eubacteria – Archaebacteria Eubacteria • Largest bacteria kingdom • Very diverse • Classified into smaller groups by: – – – – – – Cell shape and structure How they obtain food Type of food they eat Wastes they produce Whether they are aerobes or anaerobes How they move Eubacteria • Cyanobacteria – Producers • Use carbon dioxide, water, and sunlight to make food. – Produce oxygen as a waste product. • This oxygen is used by other organisms. – Contain chlorophyll and a blue pigment. • May also be red, yellow, or black. – Live in colonies – Source of food for other organisms in lakes, ponds, and oceans. Eubacteria • Cyanobacteria Blooms – When large amounts of nutrients enter the water, the number of cyanobacteria increase significantly, eventually forming a bloom. • The organisms in the bloom use up the nutrients very quickly and the cyanobacteria die. • Aerobic consumers feed on the dead cyanobacteria, using up the oxygen in the lake during the feeding process. • Organisms such as fish die because of the decrease in oxygen. Eubacteria • Consumer Eubacteria – Grouped according to the thickness of the cell wall. • Different groups will stain different colors and be affected differently by antibiotics. – One unique organism within this group is Mycoplasma pneumoniae because it has no cell wall and can change shape. Archaebacteria • Divided into groups based on where they live or how they get energy. Archaebacteria • Salt-loving bacteria (halophiles) – Live in salty environments, such as the Great Salt Lake. Archaebacteria • Heat and acid loving bacteria (thermoacidophiles) – Live in hot, acidic environments, such as hot pools and hydrothermal vents. Archaebacteria • Methane producing bacteria (methanogens) – Anaerobic • Live in places like swamps and intestines – Use carbon dioxide for energy and produce methane as a waste product.