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1.3 Ten themes unify the study of life

1.3 Ten themes unify the study of life. Mrs. Kerstetter Biology. Biological Systems. System = a complex organization formed from a combination of smaller parts Has properties based on the arrangement and interaction of its parts Examples: Your body! Ecosystem. Cellular Basis of Life.

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1.3 Ten themes unify the study of life

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  1. 1.3 Ten themes unify the study of life Mrs. Kerstetter Biology

  2. Biological Systems • System= a complex organization formed from a combination of smaller parts • Has properties based on the arrangement and interaction of its parts • Examples: • Your body! • Ecosystem

  3. Cellular Basis of Life • All organisms are made of cells • Most multicellular organisms have cells that are specialized for different functions • What does specialized mean? • Most multicellular organisms have higher levels of organization • Interaction of cells determines development and survival Celltissueorgansystemorganism

  4. Form and Function • How something works is related to its structure • AKA “form fits function” • What are some examples in nature where “form fits function?”

  5. Reproduction and Inheritance • “Like begets like” • Organisms reproduce their own kind • Genes (units of genetic information) are responsible for family inheritance • Genes are made of DNA • Each cell contains copy of ALL DNA in your genome • Inherited info in the form of DNA enables organisms to reproduce their own kind

  6. Interaction with the Environment • Each organisms interacts continuously with its environment • Imp in an ecosystem (of which we are a part!) • Transfer of chemicals b/w organisms and the environments • React to environmental stimuli

  7. Energy and Life • Energy is needed in chemical form • Carbohydrates, lipids, etc. • Ecosystem

  8. Regulation • Homeostasis= regulation of internal conditions • Examples?

  9. Adaptation and Evolution • Adaptation= an inherited trait that helps an organism’s ability to survive and reproduce • Population= localized group of organisms of the same species • Natural selection= individuals with beneficial variations may live longer and produce more offspring than those that don’t • Evolution= generation-to-generation change in the proportion of different inherited genes in a population

  10. Biology and Society • DNA • Medicine • Agriculture • Pharmaceuticals • Environmental issues • Genetics

  11. Scientific Inquiry =asking questions about nature =using observations or experiments to to find possible answers

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