21.1 What Are Microorganisms?
21.2 The Domains Bacteria and Archaea
The Domain Bacteria
The Domain Archaea
21.3 The Kingdom Protista
Algae
Protozoa
Funguslike Protists
21.4 Multicellularity in the Protista
21.5 The Kingdom Fungi
The Taxonomy of Fungi
The Significance of Fungi
HOW SCIENCE WORKS 21.1: How Many Microbes Are There?
HOW SCIENCE WORKS 21.2: Bioremediation
OUTLOOKS 21.1: Food Poisoning/Foodborne Illness/ Stomach Flu
OUTLOOKS 21.2: The Microbial Ecology of a Cow
OUTLOOKS 21.3: The Marine Microbial Food Web
HOW SCIENCE WORKS 21.3: Penicillin
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