Chapter 1-5 Notes

Chapter 1-5 Notes - OfficeHours Tuesday11:00AM12:00PM(noon...

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Office Hours:  Tuesday 11:00 AM – 12:00 PM (noon)  Thursday 1:00-2:00 PM Chapter 1: Introduction to Life on Earth  What is the Science of Biology? Biology is the study of life  o It is a field of science (use scientific method)  Principles Underlying all Science  o Body of knowledge about the natural world  o All events can be attributed to natural causes  Explanations don’t invoke supernatural powers (use natural causes)  Don’t exclude them, they just cant be studied using science (need fact,  observations, and data)  Natural laws apply at all places and all times Assume processes occurred in the past and that they will then  apply in the future  Make predictions about what is going to happen  Ex: weather forecast (meteorologist)    People perceive events in similar ways  Objective things that can be measured in someway  A universal tool (not subjective, but objective) (rates, lengths,  and distances)  Misconceptions About Science  o Scientist “prove” things happen  Not 100% certain about their explanation  Take the evidence they have at hand and come up with an explanation  that is supported by that evidence  Information can then come along and change their explanation (subject  to change as we learn more)  Open for new revelations   o “It is just a theory”  Theory – educated guess  In science a theory is a big deal (more than a guess)  Supported by a wide range of experiments and observations coming  from different sources  Cell theory – fundamental unit of living things  Atomic theory – describes how atoms are put together and their role in  making up matter  Fit a wide range of supporting evidence  o Science vs. religion  Science is good at figuring out what goes on in nature  Religion deals with the existence of God and moral and ethical values 
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Religion falls outside the realm of nature  Complement one another  Work to make our lives better  The Scientific Method  o Observation   Hypothesis   Experiment   Conclusion  o Observation – something unexpected happens  o Hypothesis – explaining what happens (Explanation; if/then prediction) educated  guess  Scientific hypothesis – (if/then) if we do this then that will be the result  o Experiment – controlled test; challenge prediction (either determine hypothesis is  valid or that the hypothesis was wrong)  o Conclusion – Supports or doesn’t support hypothesis  If it doesn’t you can modify the original hypothesis do and experiment to 
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