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Anatomy of Prokaryotes and Eukaryotes Prokaryotic Cell Structure Cell size, shapes, and arrangements Parts of a Prokaryotic Cell Glycocalyx: slime layer.

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Presentation on theme: "Anatomy of Prokaryotes and Eukaryotes Prokaryotic Cell Structure Cell size, shapes, and arrangements Parts of a Prokaryotic Cell Glycocalyx: slime layer."— Presentation transcript:

1 Anatomy of Prokaryotes and Eukaryotes Prokaryotic Cell Structure Cell size, shapes, and arrangements Parts of a Prokaryotic Cell Glycocalyx: slime layer or capsule Fimbriae and sex pilus, flagella Cell wall and plasma membrane (g+, g-, mycobacteria, archaebacteria) Plasma membrane and material transport; osmosis Nuclear Area (Nucleoid), Plasmids, Ribosomes Endospores Eukaryotic Cell Structure Cytoplasm (open streets and city squares) Nucleus (library) Ribosomes (construction factories) Internal membrane System: ER, Golgi, Lysosomes Mitochondria (power station) Chloroplasts (food synthesis factory) Cytoskeleton (pulling ropes,& lumber)

2 Plasma or Cell Membrane Figure 4.14a

3 Types of Transport Across a Selectively Permeable Cell Membrane

4 Osmosis and Water Balance in Cells Osmosis is the passive transport of water across a selectively permeable membrane. Water moves across a membrane from high concentration (high purity) to low concentration (low purity)

5 Figure 4.18c-e Osmosis: Water Moving From High Purity to Low Purity Bacterial growth media is made to be isotonic with cells ( ~ 1% dissolved substances) (outside)

6 Anatomy of Prokaryotes and Eukaryotes Prokaryotic Cell Structure Cell size, shapes, and arrangements Parts of a Prokaryotic Cell Glycocalyx: slime layer or capsule Fimbriae and sex pilus, flagella Cell wall and plasma membrane (g+, g-, mycobacteria, archaebacteria) Plasma membrane and material transport; osmosis Nuclear Area (Nucleoid), Plasmids, Ribosomes Endospores, Cytoskeleton Eukaryotic Cell Structure Cytoplasm (open streets and city squares) Nucleus (library) Ribosomes (construction factories) Internal membrane System: ER, Golgi, Lysosomes Mitochondria (power station) Chloroplasts (food synthesis factory) Cytoskeleton (pulling ropes,& lumber)

7 Inclusions and Other Membranes Figure 4.6a Inclusion Nucleoid (Nuclear Area) Plasmid

8 Ribosomes Figure 4.19 Ribosomes from eukaryotes are larger and constructed differently

9 Metachromatic granules (phosophate) Polysaccharide granules Lipid inclusions Sulfur granules Carboxysomes Thylakoids/photsynthetic membranes Gas vacuoles Magnetosomes Intracellular Membranes and Inclusions

10 Figure 4.21a Endospore Formation Endospores are heat-resistant, UV resistant, and chemically resistant

11 Bacterial Cell Walls Include Scaffolding Proteins (Cytoskeleton) Proteins similar to actin in eukaryotes help in expanding the peptidoglycan during bacterial growth by acting as scaffolds

12 Anatomy of Prokaryotes and Eukaryotes II Prokaryotic Cell Structure Cell size, shapes, and arrangements Parts of a Prokaryotic Cell Glycocalyx: slime layer or capsule Fimbriae and sex pilus, flagella Cell wall and plasma membrane (g+, g-, mycobacteria, archaebacteria) Plasma membrane and material transport; osmosis Nuclear Area (Nucleoid), Plasmids, Ribosomes Endospores, Cytoskeleton Eukaryotic Cell Structure Cytoplasm (open streets and city squares) Nucleus (library) Ribosomes (construction factories) Internal membrane System: ER, Golgi, Lysosomes (Construction & shipping) Mitochondria (power station) Chloroplasts (food synthesis factory) Cytoskeleton (pulling ropes,& lumber)

13 Comparison of Prokaryotic and Eukaryotic Cells

14 Greater Size, Complexity, and Nucleus in Eukaryotes Figure 4.22b

15 Figure 4.21a Eukaryotic Cells:Protists, Plants, Animals, & Fungi Cell wall (if present)

16 Anatomy of Prokaryotes and Eukaryotes Prokaryotic Cell Structure Cell size, shapes, and arrangements Parts of a Prokaryotic Cell Glycocalyx: slime layer or capsule Fimbriae and sex pilus, flagella Cell wall and plasma membrane (g+, g-, mycobacteria, archaebacteria) Plasma membrane and material transport; osmosis Nuclear Area (Nucleoid), Plasmids, Ribosomes Endospores Eukaryotic Cell Structure Cytoplasm (open streets and city squares) Nucleus (library) Ribosomes (construction factories) Internal membrane System: ER, Golgi, Lysosomes Mitochondria (power station) Chloroplasts (food synthesis factory) Cytoskeleton (pulling ropes,& lumber)


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