BIOL 152 1st Edition Lecture 5I. ProkaryotesA. Simple Cells1. May form colonial aggregations but fail to interact in the manner that cells in tissues do.2. Most successful organisms on earth have simple structures 3. Bacterial appearance a. Rod- shaped bacillib. Spherical coccic. Spiral-shaped spirilla 4. Bacteria a. Hot Thermal Vents b. Can tolerate the absence of oxygenc. Process inorganic molecules as an energy sourceB. Modes of Nutrition 1. Photo-autotropha. Make energy from Light and have a carbon source of CO22. Chemo-autotroph a. Make energy from inorganic materials and have a carbon source of CO23. Photo-Heterotroph a. Make energy from light and have a carbon source of Organic compounds4. Chemo- Heterotropha. Make energy and have a carbon source of organic compoundsC. DNA Exchange 1. Bacteria commonly exchange DNA These notes represent a detailed interpretation of the professor’s lecture. GradeBuddy is best used as a supplement to your own notes, not as a substitute.2. If nonresistant strain receive a plasmid, containing an antibiotic resistant gene, bacteria can become resistant as wellD. Antibiotics1. How they worka. Inhibiting gene expressionb. Disrupting the proper coiling of DNA c. Blocking the synthesis of proteins d. Inhibiting the production of ATP e. Targeting molecule f. Preventing the formation of the cell wall 2. Bacterial resist effects of antibiotics a. Make enzymes that inactivate antibiotics b. Altering the shape of the target molecules c. Pumping antibiotics out of the cellE. Bacteria Classification1. Based upon the amounts of peptidoglycan in cell walls 2. Gram positive- If bacteria bind the strain3. Gram Negative- If not bind the strain 4. Shape a. Coccusb. Bacillusc. Spirillum5. Archaebacteria- More primitive a. Survive in extreme environments 6. Eubacteria- More advanceda. More diverse and complicated groupF. Importance of Bacteria 1. Decomposersa. Recycle organic matters2. Nitrogen fixating bacteria 3. Source of deceases 4. Models for