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SFR 100 - Topic 13: Biotic Component of Forests page 1
Topic #13
Biotic Component of Forests:
Classification and Summary of Single Cell Life Forms
(Campbell and Reece: 536-538, 551-553, 381-390, 556-574, 575-579)
I.
Objectives
A.
Introduce concepts for classifying living organisms into related groups.
B.
Review basic characteristics of single cell life forms and viruses.
II.
Introduction.
A.
Food web is made of many different types of organisms.
B.
C.
Living organisms classified into related groups.
Based on "evolutionary relationships" or phylogeny.
III.
Taxonomic classification based on evolution.
A.
Domain
B.
Kingdom
C.
Division or Phylum.
D.
Class
E.
Order
F.
Family
G.
Genus
H.
Species
I.
Latin name
1.
Genus species
2.
Always underline or italicize.
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IV.
V.
VI.
Six "Kingdoms" of living organisms
A.
Archae
B.
Bacteria.
C.
Protists.
D.
Plants.
E.
Fungi.
F.
Animals.
Three Domains
A.
Bacteria
B.
Archaea
C.
Eukarya
Viruses.
A.
Structure.
B.
Energy utilization.
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VII.
C.
Reproduction (Figs. 19.4, 19.5).
D.
Are viruses living?
Prokaryotic Species
A.
Introduction
1.
Structure
a)
Small
b)
Membrane and wall
c)
Flagellum(a)
d)
Circular chromosome of DNA
e)
Plasmids –
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f)
B.
Ribosomes
2.
Reproduction
3.
Most diverse, longest evolving, life forms.
Archae – harsh environments (of ancient times)
1.
Anaerobic.
2.
Salt environments
3.
High temperatures.
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C.
VIII.
Bacteria- most common prokaryotic
Protists.
A.
Structure: Grouping of convenience.
B.
Energy utilization.
1.
Photosynthetic - have chlorophyll.
a)
Diatoms:
b)
Algae.
2.
Lack chlorophyll.
3.
Mixed – Endosymbiosis
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IX.
Key Terms.
taxonomic classification
phylogeny
Domain
Kingdom
Genus
Species
Latin name
prokaryote
eukaryote
obligate parasite
vector
Flagellum
Nucleoid
Plasmid
Archae
Bacteria
binary fission
anaerobic
Autotropsh
Heterotrophs
diatoms
algae
protozoa
Endosymbiosis