Chapter 7 Tour of the Cell

How We Study Cells p. 109

·        Light Microscope

·        Magnification

·        Resolving Power

·        Robert Hooke

·        Organelles

·        Electron microscope

·        Figure 7.1

·        Transmission electron Scope

·        Scanning electron microscope

 

Cell Biologists can isolate organelles to study their function p. 111

·        Cell fractionation

·        Figure 7.3 p.111

·        Ultracentrifuges

 

Prokaryotic and eukaryotic cells differ in size and complexity p. 112

 

·        What are some basic features common to all cells?

·        Compare a prokaryotic and eukaryotic cells….what are the differences

·        Figure 7.4 A prokaryotic cell

·        Why must cells remain small (microscopic) in size?

·        Figure 7.5 p. 113

 

Internal membranes compartmentalize the functions of a eukaryotic cell p. 114

 

·        What causes the compartments?

·        Figure 7.7 p. 114

·        Figure 7.8 p. 115

·        You will need to know all the organelles mentioned in the figures above. Also, note the differences between a plant and animal cell.

 

Organelle	Function	Structure	Additional Notes
Cytoplasm
Cytosol
Nucleus
Nucleolus
Chromosomes and Chromatin
Nuclear membrane Nuclear pore Nuclear lamina Figure 7.9 p. 116
Ribosomes Figure 7.10 p. 117 Free vs. bound ribosomes
Endomembrane System Figure 7.11 p. 119
Vesicles, Transport Vesicles Figure 7.12 p. 120
Smooth ER Figure 7.11 p. 119
Rough ER Figure 7.11 p. 119
Golgi Apparatus
Lysosomes Figure 7.14 p. 122
Food Vacuoles
Contractile Vacuoles
Central Vacuoles, Tonoplast Figure 7.15 p. 123
Mitochondria Figure 7.17 p. 124
Chloroplasts Figure 7.18 p. 125
Peroxisome, Glyoxysomes
Cytoskeleton Figure 7.20 p. 126
Microtubules Table 7.2 p. 127
Actin Filaments (Microfilaments) Table 7.2 p. 127 Myosin, Figure 7.7 p. 131 Pseudopodia, Cytoplasmic streaming
Intermediate Filaments Table 7.2 p. 127
Centrosomes and Centrioles Figure 7.22 p. 128
Cilia Figure 7. 23 p. 129
Flagella Figure 7.23 p. 129
Cell Wall Primary Cell Wall Middle lamella Secondary Cell Wall
Extracellular Matrix (ECM) Collagen Proteoglycans Fibronectins Integrins
Plasmodesmata
Tight Junctions
Desmosomes
Gap Junctions

 

Self Quiz p. 136 -137 Omit 8 and 20