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Ch 27 - Bacteria and Archaea (1 slide per page)-1

Eukaryote morphology differences 11 cell wall

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Unformatted text preview: Prokaryote vs. Eukaryote Morphology Differences 11. Cell wall structurally different from eukaryotes •Eukaryote (when present) made of chitin (fungi) or cellulose (plants etc) •Bacteria cell wall made of peptidoglycan •Archaea cell wall of various other substances Figure 27.3 (Campbell et al 9th ed) 13 Gram-Negative & Gram Positive Bacteria • Cell wall made of peptidoglycan • Provides structure & osmotic protection • Gram Stain process distinguishes btwn species based on cell wall. • Antibiotics work to disrupt peptidoglycan formation • Gram-negative usually more pathogenic • Lipopolysaccharides ↑ resistance to immune system and antibiotics • Lipid components often toxic Figure 27.3 (Campbell et al 9th ed) 14 Prokaryote vs. Eukaryote Morphology Differences 12. Cytoskeleton made of different proteins 15 Prokaryote vs. Eukaryote Morphology Differences 13. Flagella a. Much smaller b. Structurally different c. Move differently Figure 27.6 (Campbell et al 9th ed) Prokaryote Flagellum spins Eukaryote Flagellum waves 18 3 Common Morphologies Coccus (spherical) Bacillus (rod-sha...
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