Chapter 27 Notes (Prokaryotes)

Chapter 27 Notes (Prokaryotes) - Chapter 27 Notes...

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Chapter 27 Notes (Prokaryotes) 1. Basic characteristics of prokaryotes a. Unicellular b. Cell wall exists c. Microscopic (very small) d. Reproduce in a very quick rate (exponential rate); therefore collective biomass 2. Classification of prokaryotes a. Cell wall component i. If peptidoglycan exists, purple color will be shown when gram staining is treated: we call this “gram positive” – usually bacteria ii. If peptidoglycan does not exist, pink color will be shown when gram staining is treated: we call this “gram negative”: More toxic, lipopolysaccharide (type of lipid) exists – usually Archea b. Shapes i. Spherical: Cocci ii. Rod-shaped: Bacilli iii. Spiral 3. Structure of prokaryotes (Outside to inside order) a. Flagellum: Locomotion(movement) b. Capsule: A sticky layer that covers cell wall i. This enables prokaryotes to stick to the host cells or to prevent prokaryotes themselves from host cell’s attack c. In some prokaryotes, fimbriae and pili exist
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Chapter 27 Notes (Prokaryotes) - Chapter 27 Notes...

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