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Ch_01_Lecture_2[1]

Ch_01_Lecture_2[1] - Chapter 1 Biology Exploring Life 1...

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1 Chapter 1 Biology: Exploring Life
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2 Concept Check The population level The organism level The organ level The molecular level 0 Which of the following levels of life’s hierarchy is not appropriate when referring to two of life’s domains: Archaea and Bacteria?
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3 Community Population Individual Organ 0 Concept Check Darwin proposed the theory of natural selection. For the most part natural selection acts as a filtering agent at the ___________level of life’s hierarchy.
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4 THE PROCESS OF SCIENCE 1.7 Scientists use two main approaches to learn about nature 0 What is Science? Is a way of knowing Seeks natural causes for natural phenomena
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5 in discovery science Scientists describe some aspect of the world and use inductive reasoning to draw general conclusions from particular instances 0 process of gathering data by verifiable observations and measurements to explain natural phenomena 1. Discovery Science Two commonly used approaches to understanding nature:
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6 In hypothesis-based science Scientists attempt to explain observations by testing hypotheses 0 a tentative or educated guess at an answer to a problem or question being asked What is a hypothesis? uses deductive reasoning , which flows from a general premise to a specific premise; conclusion derived from reasoning 2. Hypothesis-Based Science important aspect of the process: deduction can be tested questions on conclusions drawn from observations during “discovery science”
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7 0 1.8 With hypothesis-based science, we pose and test hypotheses 1. observations : own or others 2. questions : unclear aspects of the observations: How? Why?
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