Chapter 1 Flashcards
Definition of Life
Cells and organization
Response to environmental changes
Growth and development
Biological evolution
Only thing that does not evolve is Genetic Coding
Energy use and metabolism
Energy = Electrons
Metabolism = Ability to collect electrons thru Oxidation
Regulation and homeostasis
Reproduction
Microbiology
The study of Microbes
Types of Microbial Cells
Prokaryotic Cells & Eukaryotic Cells
Prokaryotic Cell
Lack of true membrane delimited nucleus
Eukaryotic Cells
Have membrane enclosed nucleus
More complex morphologically
Classification Schemes
2 Groups + 5 Kingdoms
Groups
Prokaryotes & Eukaryotes
Kingdoms
Prokaryote
Monera
Eukaryote
Animalae
Protista
Plantae
Fungi
Carl Woese
Discovered the 3 Domain System
Domains
Domain Bacteria
Domain Archaea
Domain Eukarya
Domain Bacteria
Single Celled
Have cell wall with peptidoglycan
Most lack a membrane-bound nucleus
Ubiquitous
Some live in extreme environments.
Cyanobacteria produce significant oxygen
Domain Archaea
Distinguished from Bacteria by unique rRNA gene sequence
Lack of peptidoglycan in cell walls.
Have unique membrane lipids.
Many live in extreme environments.
Have unusual metabolic characteristics
Domain Eukarya
Consists of Protists & Fungi
Protists
Larger than Bacteria & Archaea
Algae → Photosynthetic.
Protozoa → may be motile, “hunters, grazers”.
Slime molds → two life cycle stages.
Water molds → devastating disease in plants.
Algae
Photosynthetic
