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Cells, Microscopes, and Domains of Life

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Page 1: Cells, Microscopes, and Domains of Life. Introduction Modern cell theory Different types of cells –prokaryotic, eukaryotic Three cell components –cell

Cells, Microscopes, and Domains of Life

Page 2: Cells, Microscopes, and Domains of Life. Introduction Modern cell theory Different types of cells –prokaryotic, eukaryotic Three cell components –cell

Introduction

• Modern cell theory

• Different types of cells– prokaryotic, eukaryotic

• Three cell components– cell membrane, genetic material, cytoplasm

• Five kingdoms

• Three domains

Page 3: Cells, Microscopes, and Domains of Life. Introduction Modern cell theory Different types of cells –prokaryotic, eukaryotic Three cell components –cell

The hierarchy of biological order

Page 4: Cells, Microscopes, and Domains of Life. Introduction Modern cell theory Different types of cells –prokaryotic, eukaryotic Three cell components –cell

Classifying life

Page 5: Cells, Microscopes, and Domains of Life. Introduction Modern cell theory Different types of cells –prokaryotic, eukaryotic Three cell components –cell

The traditional 5-kingdom system

Page 6: Cells, Microscopes, and Domains of Life. Introduction Modern cell theory Different types of cells –prokaryotic, eukaryotic Three cell components –cell

The three domains of life

Page 7: Cells, Microscopes, and Domains of Life. Introduction Modern cell theory Different types of cells –prokaryotic, eukaryotic Three cell components –cell

The 5-kingdom system compared with alternative schemes of classification

Page 8: Cells, Microscopes, and Domains of Life. Introduction Modern cell theory Different types of cells –prokaryotic, eukaryotic Three cell components –cell

Fig. 18-6 The Eukaryotic Tree of Life

Page 9: Cells, Microscopes, and Domains of Life. Introduction Modern cell theory Different types of cells –prokaryotic, eukaryotic Three cell components –cell

The Compound Light Microscope

• Prepared “letter e”

• NEVER USE COARSE ADJUSTMENT ON HIGH POWER!

Page 10: Cells, Microscopes, and Domains of Life. Introduction Modern cell theory Different types of cells –prokaryotic, eukaryotic Three cell components –cell

Microscopic Measurement (p.72)

• Field of View

• Diameter

• Table 1. Diameter of field of view with three different objective lenses

Page 11: Cells, Microscopes, and Domains of Life. Introduction Modern cell theory Different types of cells –prokaryotic, eukaryotic Three cell components –cell

Comparing Cells

• Domain Eukarya, Kingdom Protista

• Domain Eukarya, Kingdom Plantae

• Domain Eukarya, Kingdom Fungi

• Domain Eukarya, Kingdom Animalia

• Domain Bacteria

Page 12: Cells, Microscopes, and Domains of Life. Introduction Modern cell theory Different types of cells –prokaryotic, eukaryotic Three cell components –cell

A Prokaryotic Cell

Page 13: Cells, Microscopes, and Domains of Life. Introduction Modern cell theory Different types of cells –prokaryotic, eukaryotic Three cell components –cell

Diversity of Bacterial Forms

Coccus Bacillus Spirillus

Page 14: Cells, Microscopes, and Domains of Life. Introduction Modern cell theory Different types of cells –prokaryotic, eukaryotic Three cell components –cell

Euglena

Protista:

Page 15: Cells, Microscopes, and Domains of Life. Introduction Modern cell theory Different types of cells –prokaryotic, eukaryotic Three cell components –cell

Fig. 20-3. Rhizopus (bread mold) life cycle

Fungi:

Page 16: Cells, Microscopes, and Domains of Life. Introduction Modern cell theory Different types of cells –prokaryotic, eukaryotic Three cell components –cell

Fig. 6-4 A Generalized Animal CellAnimalia:

Page 17: Cells, Microscopes, and Domains of Life. Introduction Modern cell theory Different types of cells –prokaryotic, eukaryotic Three cell components –cell

Fig. 6-5. A Generalized Plant CellPlantae:

Page 18: Cells, Microscopes, and Domains of Life. Introduction Modern cell theory Different types of cells –prokaryotic, eukaryotic Three cell components –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.

Page 19: Cells, Microscopes, and Domains of Life. Introduction Modern cell theory Different types of cells –prokaryotic, eukaryotic Three cell components –cell

Any Questions?