KINGDOM MONERA
Bacteria are unique
& diverse, with different roles.
I. Prokaryotes vs.
Eukaryotes
A.
Structural differences: unicellular, small, circular chromosomes, binary
fission, no organelle, simple flagella
B. Metabolic differences
II. Bacterial Structure
A.
Cell Wall: Peptidoglycan, Gram stain,
glycocalyx
B. Morphology
1. Shape: bacilli, cocci, spirilla
2. Flagella, pili, fimbria
III. Bacterial
Variation
A. Mutation
B. Genetic recombination: conjugation
IV. Bacterial Ecology
& Metabolic diversity
A. Environments: ubiquitous
B. Metabolic diversity
1. obligate/ facultative anaerobes;
aerobes
2.
autotrophic bacteria: Photosynthetic
& chemoautotrophic
3. Heterotrophic
4. Nitrogen-fixing
V. Bacteria as plant
pathogens
VI. Bacteria as
animal pathogens
1. Legionnaires’ disease
2. STDs
3. Dental caries
VII. Bacterial
Diversity
A. Archaebacteria: methanogens, halophiles, thermophiles
B. cyanobacteria
C. nitrogen-fixing bacteria
D. Chemoautotrophic bacteria
VIRUSES--A Brief
Introduction
Noncellular
infectious agents that have a protein coat surrounding nucleic acid that cannot
reproduce by themselves.
Bacteriophages
Virus replication
Lysogeny/ Lysogenic cycle
Lytic cycle
Diversity among the
viruses