Monerans (Archaebacteria &

Eubacteria)

Archaebacteria• Ancient Bacteria “Extreme Bacteria”• Prokaryotes

Eubacteria• True Bacteria• Eubacteria

Observe and Describe

Dennis Kunkel

Three Shapes of Bacteria•Bacillus •Coccus•Spirillium

Bacillus• Rod-shaped, endospore-forming aerobic or facultative

anaerobic.

http://www.ncbi.nlm.nih.gov/books/NBK7699/

Coccus• Spherical shaped bacterium.

http://global.britannica.com/EBchecked/topic/123500/coccus

Spirillium• Corkcrew-shaped bacteria or spiral.

Bacterial Arrangements

Reproduction• Binary Fission

Reproduction• Conjugation

Reproduction • Endospore

Economic Importance of Bacteria

Bioremediation

Carbon FixationFood Processing

Six Types of Microbes Based on Oxygen Requirement• Aerobe• Obligate Aerobe• Facultative Anaerobe• Microaerophile• Anaerobe• Obligate Anaerobe

Aerobes• Use O2 in its metabolism and has enzymes needed to process toxic

oxygen products.

Bacillus anthracis

Obligate Aerobe• Can’t grow in the absence of oxygen.

Mycobacterium tuberculosis

Microaerophile• Require small amount of oxygen for metabolism.

Helicobacter pylori

Anaerobe• Grow best in the absence of oxygen.

Facultative Anaerobe• Doesn’t require oxygen for

metabolism and is capable of growth in the absence of oxygen.

Staphylococcus aureus

Obligate Anaerobe• Organisms that lack enzyme to process toxic oxygen.

Clostridium tetani