cells, microscopes, and domains of life. introduction modern cell theory different types of cells...
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Cells, Microscopes, and Domains of Life
Introduction
• Modern cell theory
• Different types of cells– prokaryotic, eukaryotic
• Three cell components– cell membrane, genetic material, cytoplasm
• Five kingdoms
• Three domains
The hierarchy of biological order
Classifying life
The traditional 5-kingdom system
The three domains of life
The 5-kingdom system compared with alternative schemes of classification
Fig. 18-6 The Eukaryotic Tree of Life
The Compound Light Microscope
• Prepared “letter e”
• NEVER USE COARSE ADJUSTMENT ON HIGH POWER!
Microscopic Measurement (p.72)
• Field of View
• Diameter
• Table 1. Diameter of field of view with three different objective lenses
Comparing Cells
• Domain Eukarya, Kingdom Protista
• Domain Eukarya, Kingdom Plantae
• Domain Eukarya, Kingdom Fungi
• Domain Eukarya, Kingdom Animalia
• Domain Bacteria
A Prokaryotic Cell
Diversity of Bacterial Forms
Coccus Bacillus Spirillus
Euglena
Protista:
Fig. 20-3. Rhizopus (bread mold) life cycle
Fungi:
Fig. 6-4 A Generalized Animal CellAnimalia:
Fig. 6-5. A Generalized Plant CellPlantae:
Putting Away the Microscope
• Remove the slide and return it to its proper place
• Turn down the rheostat to “3” or lower
• Turn off the illuminator switch.
• Revolve the nosepiece so the 4X objective is in place.
• Cover the microscope with its cover.
Any Questions?
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