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Prokaryotes Eukaryotes-1.3

Prokaryotes Eukaryotes-1.3 - Prokaryotes Eukaryotes 1...

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Prokaryotes + Eukaryotes 1. Prokaryotes a. Characteristics of Prokaryotic Cells- bacteria and archaea Single stranded Circular Simple Within-cytoplasm, ribosomes, nucleoid No nucleus Plasma membrane- gets rid of toxins Cell wall- layer of peptidoglycan (protein and sugars) Small structure b. Where are Prokaryotes found? - Biofilms-community of microorganisms which adhere to a surface - within cells - there are about 10* more bacteria cells than human cells c. Why are they so successful? - distinctive walls- peptidoglycan layar helps 1. gram postive groups- PURPLE DYE- thick layer of peptidogylcan and single membrane 2. gram negative groups- PINK DYE- two membrane and skinny layer of peptidoglycan - locomotion - reproduce quickly-binary fission - communication- bioluminescence- emit vissable light - diverse metabolism d. Diversity of Prokaryotes (be able to give at least 1 example from each group described) - Spirochete-GRAM NEGATIVE EX. Borellia burgdoforferi –‘lyme disease’ - Chlamydia- smallest bacteria EX. Trachoma EX. ‘the clap’ aka Chlamydia - High GC Gram positives- Actinobacteria, most are free living in the soil and some cause disease EX. Mycobacterium
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