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| Frage | Antworten |
| 3 forms of bacteria | Cocci: spherical Bacilli: Rod-like Spirilla: Spiral |
| What is Bacillus Anthracis? | Endospores, resistance cells formed by bacteria around the chromosome |
| What is the cell wall of bacteria composed of? | Peptoglycan |
| What prevents bacteria cells from bursting in a hypotonic environment? | Cell wall |
| 2 classifications of bacteria? ( colors?) | Gram positive( blue-purple) Gram negative ( Pink) |
| gram negative cell wall charateristics | small amounts of peptidoglycan additional outer membrane ( lipopolysaccharide) More pathogenic ( capable of creating disease) May be surrounded by gelatinous capsule ( protection against host defense) |
| Define obligate aerobes, facultative anaerobes and obligate anaerobes. | obligate aerobes: require oxygen for growth facultative anaerobes : oxygen or not. doesn't matter obligate anaerobes: can't grow with oxygen |
| What are saprobes? | decomposers that take nutrient from dead organisms |
| what's symbiosis and 3 types | Symbiosis: interaction between host and symbiont 1. Mutualism: both benefit 2. Commensalism: symbiont GOOD, hosts don't care 3. Parasitism: symbiont GOOD, BAD for hosts |
| Nitrogen metabolism, cycling of nitrogen through the ecosystem | N2 fixed into NH+-->NO3-->N2 and NH4 |
| Limitation of prokaryotic cells( bacteria) | small genome, so small number of enzymes, few metabolic pathways |
| Reproduce sexually or asexually? | asexually, binary fission |
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