Transcript Biology 101L

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
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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
Protista:
Euglena
Fungi:
Fig. 20-3. Rhizopus (bread mold) life cycle
Animalia:
Fig. 6-4 A Generalized Animal Cell
Plantae:
Fig. 6-5. A Generalized Plant Cell
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?