1 3 Ten themes unify the study of

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1. 3 Ten themes unify the study of life Mrs. Kerstetter Biology

1. 3 Ten themes unify the study of life Mrs. Kerstetter Biology

Biological Systems n System= a complex organization formed from a combination of smaller parts

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

Cellular Basis of Life n n All organisms are made of cells Most multicellular

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

Form and Function n How something works is related to its structure n AKA

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

Reproduction and Inheritance n “Like begets like” n Organisms reproduce their own kind Genes

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

Interaction with the Environment Each organisms interacts continuously with its environment n Imp in

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

Energy and Life n Energy is needed in chemical form n n Carbohydrates, lipids,

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

Regulation Homeostasis= regulation of internal conditions n Examples? n

Regulation Homeostasis= regulation of internal conditions n Examples? n

Adaptation and Evolution n n Adaptation= an inherited trait that helps an organism’s ability

Adaptation and Evolution n n 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

Biology and Society DNA n Medicine n Agriculture n Pharmaceuticals n Environmental issues n

Biology and Society DNA n Medicine n Agriculture n Pharmaceuticals n Environmental issues n Genetics n

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

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