biology

biology - Biology 1001 Aug. 31 Chapter 1: Introduction to...

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Biology 1001 Aug. 31 Chapter 1: Introduction to Life on Earth Outline: Properties of Life Science Evolution Categories of Life 7 Emergent Properties of Life: (page 1 & 2 in student lecture notebook for example) 1. Order- he living world is a hierarchy, with each level of biological structure building on the level below it each level had emergent properties cells- the basic unit of life structure and function are correlated 2. Reproduction- generation of life from life the continuity of life- heritable information (DNA) encoded instructions for organism’s structure and function all of our ancestors reproduced! 3. Growth & Development - increase in size/mass must acquire more than needed for homeostasis genetically programmed -timing -size -shape 4. Acquire Materials & Energy Use - for order, growth, homeostasis opposes natural trend to disintegration from external source 5. Response to Environment- respond to stimuli 6. Homeostasis - “staying the same” use energy to maintain internal environment narrow range of acceptable conditions 7. Evolutionary Adaptation -
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the core theme of biology Life Evolves - genetic composition of population changes - differential survival (natural selection) - advantageous variants are selected 3 Assumptions of Science: Events have natural causes Natural laws DON’T change with time or place People perceive natural laws in the same way Scientific Method: (page 3 in student lecture notebook for example) Make observation Ask a question Propose hypothesis - must be testable - “if/then” predictions Design & execute experiment - controlled test of predictions - designed to challenge hypothesis Draw conclusion about hypothesis - (supported or not) After Many Many Experiments by Many Different Scientists: Develop a Scientific Theory Theory must have a widespread application and explain observations Continue to test theory from new perspectives THEORY “an explanation for natural events” - large amounts of data (lots of observations)
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biology - Biology 1001 Aug. 31 Chapter 1: Introduction to...

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