Ch. 1 Humans in the World of
Biology
What Characterizes Life?
Levels of Organization
Molecule
Cells
Tissue
Organ
Organ System
Organism
Population
Community
Ecosystem
Biosphere
Three Domain System
Domain Bacteria Domain Archaea
Unicellular
prokaryotic
organisms
Unicellular
prokaryotic
organisms; most
live in extreme
environments
Domain Eukarya
Eukaryotic cells that contain a membrane-bound nucleus and internal
compartment
Kingdoms
Protists
Fungi
Plants
Animals
Protozoans,
algae, diatoms
Molds,
mushrooms
Mosses,
ferns, seed
plants
Invertebrates
and
vertebrates
Make new predictions
and test them.
Results support
hypothesis
Observation
Form
a
Question
Hypothesis
Prediction
Experiment/
Further
observation
Revise hypothesis, make new predictions,
and test them with new experiments.
Results
Conclusion
Results do not
support hypothesis
Properties of Water
Covalent Bond-bonding that shares electrons
Hydrogen Bond- attraction of a positive hydrogen atom
and a negative charged atom
Polarity- unequal covalent bonds
Adhesion- attraction between two unlike molecules
Cohesion- attraction between two same molecules
Uniqueness of Water
-High heat capacity
-High heat vaporization
-Superior dissolving agent