Transcript Biology 1
Biology 4 What is Life? Properties of Life Reproduction Order Growth and Development Use Energy Response to the Environment Homeostasis Evolutionary Adaptations Smallest Unit of Life • Cell or Virus???? Smallest Unit of Life – The Cell • Prokaryotic Cells – DNA and Ribosomes – No nucleus – No membrane bound Organelles • Eukaryotic Cells – DNA and Ribosomes – Nucleus – Membrane bound Organelles Emergent Properties • Novel properties emerge that are not present at the level below • Reductionism Unity and Diversity Biology Hierarchy Biology Hierarchy • • • • • • • • Subatomic Particles Atoms Molecules Organelles Cells Tissues Organs Organ Systems • • • • • • Organisms Populations Communities Ecosystems Biomes Biosphere Biology Hierarchy • K • P • C • O • F • G • S Biology Hierarchy • Kingdom • Phylum • Class • Order • Family • Genus • Species Biology Hierarchy • Kingdom - Animalia • Phylum • Class • Order • Family • Genus • Species Biology Hierarchy • Kingdom - Animalia • Phylum - Chordata • Class • Order • Family • Genus • Species Biology Hierarchy • Kingdom - Animalia • Phylum - Chordata • Class - Aves • Order • Family • Genus • Species Biology Hierarchy • Kingdom - Animalia • Phylum - Chordata • Class - Aves • Order - Falconiformes • Family • Genus • Species Biology Hierarchy • Kingdom - Animalia • Phylum - Chordata • Class - Aves • Order - Falconiformes • Family - Accipitridae • Genus • Species Biology Hierarchy • Kingdom - Animalia • Phylum - Chordata • Class - Aves • Order - Falconiformes • Family - Accipitridae • Genus - Haliaeetus • Species Biology Hierarchy • Kingdom - Animalia • Phylum - Chordata • Class - Aves • Order - Falconiformes • Family - Accipitridae • Genus - Haliaeetus • Species - leucocephalus Biology Hierarchy • Kingdom - Animalia • Phylum - Chordata • Class - Aves • Order - Falconiformes • Family - Accipitridae • Genus - Haliaeetus • Species - leucocephalus Biology Hierarchy • Domain • Kingdom • Phylum • Class • Order • Family • Genus • Species Domains Domain: Bacteria • Prokaryotic • Cell Walls Peptidoglycan • Most Bacteria Domain: Archaea • Prokaryotic • Extreme Conditions • Make DNA and Proteins like eukaryotic cells Domain: Eukarya • Eukaryotic Cells Kingdom: Protista • Usually Unicellular • Some have Cell Walls of Cellulose Kingdom: Fungi • Multicellular • Cell Walls of Chitin • Decomposers Kingdom: Plantae • Multicellular • Cell Walls of Cellulose • Autotrophs Kingdom: Animalia • Multicellular • No Cell Walls • Heterotrophs What is Science? • Science = To Know • Science is a process – Scientific Method What is Science? • Science = To Know • Science is a process – Scientific Method Scientific Method • Observation – Senses / Lit search • Hypothesis – Testable and Repeatable – Null hypothesis – No significant difference – Alternative hypothesis – significant difference • Experiment – Sample Size = 30 – Control, change one variable – Threshold criterion (0.05) • Analysis – Quantitative (Statistical testing) • Conclusion Scientific Method • Observation – Senses / Lit search • Hypothesis – Testable and Repeatable – Null hypothesis – No significant difference – Alternative hypothesis – significant difference • Experiment – Sample Size = 30 – Control, change one variable – Threshold criterion (0.05) • Analysis – Quantitative (Statistical testing) • Conclusion Are they the same? • Hypothesis • Theory • Law Probability in Science • Science eliminates possibilities Probability in Science • Do the colors make them harder to see? • Is there a benefit looking like a poisonous species? Probability in Science • Science eliminates possibilities Probability in Science • Science eliminates possibilities Evolution Evolution • Change over time Why isn’t “Intelligent Design” taught in most science Classes?