The Scientific Method:
Draft Sequence of the Rice Genome
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The Scientific Method:
FAQ
Living things are organized.
Organisms Populations Communities Ecosystems Biosphere
Molecules Organelles Cells Tissues Organs and Organ systems
Living things acquire material & energy by metabolism
Living things respond to environment
Living things reproduce
Living things grow and develop
Living things adapt
Living things regulate functions
LE 1-11 Enzyme 1 A A B B C C D D D D D D D D D D D Enzyme 2 Enzyme 3 Negative feedback Enzyme 1
LE 1-12 W Enzyme 4 W X X Y Y Z Z Z Z Z Z Z Z Z Z Enzyme 5 Enzyme 6 Positive feedback Enzyme 4 Enzyme 6 Enzyme 5 Z Z Z Z Z Z Z Z Z
Living things evolve
It is more than the sum of parts
3500 proteins Map of interaction Of Drisophila
Basic Unit of Life
Shared homology and genetic material
Living things are in three domains
Bacteria 4 µm 100 µm 0.5 µm Kingdom Plantae Protists Kingdom Animalia Kingdom Fungi Archaea Domain Domain Eukarya
Evidence of life’s origin: 1.Decay of isotopes 2.Molecular clock 3.Abiotic production of biomolecules
Opari 1922 “Reducing atmosphere”
Stanley Miller 1953
4.5 billion yearsEarth Formation 4 billion yearsOcean and continent formation Evolution began 3.5 billion yearsPhotosynthetic bacteria 3 billion yearsCyanobacteria 1.5 billion yearsProtista and first eukaryotes 1 billion yearsRed and green algae 0.5 billion yearsMulticellular organisms: plants, fungi, animals P198