Ch 1, 22, 21, 27

Ch 1, 22, 21, 27 - Chapter 1 1. a. observe b. ask questions...

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Chapter 1 1. a. observe b. ask questions c. form hypothesis/make predictions d. test predictions e. If testing results continues support, make theory 2. Comparative- measuring the distribution of states among a large number of species (census) Controlled- setting up different variables with same number of species to see results 3. Life- organized genetic units capable of all functions (metabolism, reproduction, and evolution) Metabolism- total chemical activity of a living organism controlled by genes Homeostasis- maintenance of a relatively stable internal condition (temp) 4. Biological evolution- change in the genetic composition of a population over time, caused by the combination of reproduction and errors in the duplication of genetic materials 5. Buffon- French naturalist, wrote “Natural History of Animals”, clearly stated the possibility of evolution, through observing limb bones of all mammals were similar, also useless toes of pigs, all from common ancestor Lamarck- student of Buffon, proposed a lineage of organisms could change gradually over generations, offspring inherit larger/highly developed structures from over use or smaller thru lack of use. Darwin and Wallace- reproductive rates=death rates, differences within individuals, offspring similar to parents, natural selection
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6. Life Begins- 4 billion years ago, random chem. Interactions make molecules Cells form- 3.8 billion years ago, interacting systems of molecules in enclosed compartments Prokaryotes+PHS- 2. 5 billion years ago, similar to cyanobacteria, made 02 for ozone 7. Caused by the new ability of prokaryotes to photosynthesize and turn Co2 into o2, started to make life on land possible and form atmosphere, aerobic metabolism 8. The ability of cells to change structure and function to meet environment, also the ability of cells to stick together after division and coordinate 9. Increases rate of evolution, exchanges genetic info for differences, have advantages 10. species - millions of different, but closely related kinds of organisms that to not interbreed with other species, genetically independent, 11. Domain- Kingdon-Phylum-Class-Order-Family-Genus-Species 12. Prokaryotes- Organisms whose genetic material not within a nucleus Eukaryotes- Organisms whose genetic material is in nucleus, and discrete units, other compartments 13. Domains- Bacteria, Archaea, Eukarya Kingdoms - Plantae, Fungi, Animalia 14. scientific names- --- Genus species Chapter 22
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1. Radioactivity dates rocks, concentration of isotope at time is estimated/known, isotopes decay in predictable pattern, emit energy at a constant rate
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This note was uploaded on 04/08/2008 for the course BIOL 2150 taught by Professor Koscynski during the Spring '08 term at Toledo.

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Ch 1, 22, 21, 27 - Chapter 1 1. a. observe b. ask questions...

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