Eubacteria Bacteria Cyanobacteria bluegreen algae Actinobacteria Estimated that
Eubacteria Bacteria, Cyanobacteria (blue-green algae), Actinobacteria
• Estimated that bacteria were present on Earth 3. 8 billion years ago. • Originally, Eubacteria were considered part of the Monera, along with their relatives the Archaebacteria until Archaebacteria became its own group. • Archaebacteria are the most recent ancestors of Eubacteria.
Salmonella enteritidis: Kingdom: Eubacteria Phylum: Proteobacteria; Class: Gammaproteobacteria Order: Enterobacteriales Family: Enterobacteriaceae Genus: Salmonella Species: Salmonella enterica Staphylococcus aureus: Domain: Bacteria Kingdom: Eubacteria Phylum: Firmicutes Class: Baccilli Order: Bacillales Family: Staphylococcaceae Genus: Staphylococcus Species: Staphylococcus aureus
• Bacteria can be divided into two groups according to whether they retain a stain of crystal violet (Gram Stain Test). • Gram negative if they do not retain the stain. • Gram Positive if they do. • Many gram-positive bacteria are important in the production of foods, including yogurt and other milk products. Gram Positive Gram Negative • Bacillus anthracis : • Synthesizes D-glutamate. (Protein) • It is the only example of eubacteria capable of producing this protein. • Rod Shaped • Can grow in anaerobic and aerobic conditions. • Escherichia coli: • E. coli • Causes illness • possesses a rod shape • Most gram-negative bacteria are harmless, some are harmful to humans. These include members of the genus Streptococcus and Staphylococcus.
• Eubacteria are unicellular. • They are prokaryotic. • They don't have a nuclei or cellular organelles. • These are the most common forms of bacteria. • Some are autotrophs and produce there own food, while others are heterophs. • These bacteria, unlike the archaebacteria, CAN NOT live in harsh environments.
• Various shaped bacteria have been identified to resmble things such as: • Rods • Spheres • Spirals • Commas
• Cell wall made of peptidoglycan. • Cell membrane • DNA • Ribosomes • Plasma membrane • Either pili or flagella Note: NO nucleus or organelles. ****
• Eubacteria live in almost every habitat you can think of. They're found on land, in the water and even on and in the human body. In the body, they help with the digestion of the food we eat. • Depending on species, nutrition intake may be by absorption, photosynthesis, or chemosynthesis. • Reproduction most commonly occurs by a kind of cell division called binary fission. This results in the formation of two bacterial cells that are genetically identical.
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