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Copyright © 2010 Pearson Education, Inc. Table 4.2 Size comparison: Prokaryotic vs. Eukaryotic.

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Presentation on theme: "Copyright © 2010 Pearson Education, Inc. Table 4.2 Size comparison: Prokaryotic vs. Eukaryotic."— Presentation transcript:

1 Copyright © 2010 Pearson Education, Inc. Table 4.2 Size comparison: Prokaryotic vs. Eukaryotic

2 Copyright © 2010 Pearson Education, Inc. Figures 4.1a, 4.1d, 4.2b, 4.2c Arrangements  Pairs: Diplococci, diplobacilli  Clusters: Staphylococci  Chains: Streptococci, streptobacilli

3 Copyright © 2010 Pearson Education, Inc. Figures 4.1a, 4.2a, 4.2d, 4.4a, 4.4b, 4.4c Basic Shapes  Bacillus (rod-shaped)  Coccus (spherical)  Spiral  Spirillum  Vibrio  Spirochete

4 Copyright © 2010 Pearson Education, Inc. Figure 4.6 The Structure of a Prokaryotic Cell

5 Copyright © 2010 Pearson Education, Inc. Figure 4.10a Axial Filaments  Also called endoflagella or periplasmic flagella  In spirochetes only  The spirochetes are a … unique group of bacteria. This phylum contains not only many medically important species such as Treponema pallidum and Borrelia burgdorferi but others live inside arthropods such as termites and some that are free-living and reside in soil and water.  Individual AF can be anchored at one end or the other of a cell. Rotation causes the cell to move.

6 Copyright © 2010 Pearson Education, Inc. Figure 4.11 Fimbriae and Pili: Made of a different protein (pilin) than flagella and are shorter, thinner, straighter. Fimbriae allow attachment: Important for some diseases (gonorrhea and E.coli 0157:H7) and biofilms.

7 Copyright © 2010 Pearson Education, Inc. Pili: Some are used for movement and others for transfer of DNA Yikes! Resistance!

8 Copyright © 2010 Pearson Education, Inc.  Linked by polypeptides Figure 4.13a Peptidoglycan

9 Copyright © 2010 Pearson Education, Inc. Gram Positive Cell Wall Many layers of peptidoglycan

10 Copyright © 2010 Pearson Education, Inc. Impetigo and Necrotizing fasciitis flesh- eating disease)

11 Copyright © 2010 Pearson Education, Inc. Figure 4.13c Gram-Negative Cell Wall

12 Copyright © 2010 Pearson Education, Inc.  Phospholipid bilayer  Peripheral proteins  Integral proteins  Transmembrane proteins Figure 4.14b The Plasma Membrane Fig p. 90 -as viscous as olive oil

13 Copyright © 2010 Pearson Education, Inc. Figure 4.18c–e The Principle of Osmosis Fig p. 93 The movement of water across a selectively permeable membrane from an area of high water concentration to an area of lower water concentration

14 Copyright © 2010 Pearson Education, Inc. Figure 4.19 The Prokaryotic Ribosome  Protein synthesis  70S  50S + 30S subunits

15 Copyright © 2010 Pearson Education, Inc. Sporulation and Germination Figure 4.21a

16 Copyright © 2010 Pearson Education, Inc. Figure 4.22a The Eukaryotic Cell

17 Copyright © 2010 Pearson Education, Inc. Figure 10.2 Endosymbiotic Theory

18 Copyright © 2010 Pearson Education, Inc. Q&A  Penicillin was called a “miracle drug” because it doesn’t harm human cells. Why doesn’t it?


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