Chapter1 - Chapter 1 The Scientific Study of Life What is science how do we do science Why do scientists use the word theory How can we recognize

Chapter1 - Chapter 1 The Scientific Study of Life What is...

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Chapter 1: The Scientific Study of Life Chapter 1: The Scientific Study of Life What is science & how do we “do” science? Why do scientists use the word “theory?” How can we recognize pseudoscience? What is biology & what makes a thing “living?” Why is biology important?
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Chapter 1: The Scientific Study of Life What is science & how do we “do” science? Science = an intellectual activity involving observation, description, experimentation, & explanation of the natural world The natural world is the objective & measurable world around us Science is NOT a collection of facts Science can NOT answer questions about immeasurable things e.g. religion, morals, ethics, values, art, etc.
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Chapter 1: The Scientific Study of Life Being a scientist is like being a detective instead of answering questions about crimes, you answer questions about the natural world Does the radiation from cell phones cause brain tumors? Does vitamin C reduce the likelihood of getting a cold? Does “blood doping” really improve athletic performance? Are indoor tanning salons safer than tanning outdoors? What dose of alcohol is lethal for a human? Should you take aspirin if you have a fever? Which parent determines a baby’s sex? Do vaccinations cause autism? Do probiotics actually improve gut health?
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Chapter 1: The Scientific Study of Life A good detective acts carefully, going step by step to gather evidence, looking for patterns & relying on logic , evidence , & objectivity – they don’t rely on a hunch or subjective biases some bad detectives do, which leads to the wrongful arrest & imprisonment of innocent people A good scientist does the same, following the scientific method to form a logical hypothesis & collect data/evidence in an objective way
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Chapter 1: The Scientific Study of Life The scientific method includes: A logical hypothesis = a tentative explanation for observations -must be testable
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Chapter 1: The Scientific Study of Life The scientific method includes: A prediction based on the hypothesis = if / then statement - If my hypothesis is true, then ____ will happen
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Chapter 1: The Scientific Study of Life Hypothesis & prediction examples: Suppose you hypothesized that your car won’t start because it ran out of gas Hypothesis : My car won’t start because the battery is dead. Prediction : If my hypothesis is correct, then my car will start if I put in a new battery. Another possible prediction: If my hypothesis is correct, then a different car won’t start if I put my battery in it
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Chapter 1: The Scientific Study of Life The scientific method includes: An experiment or observation that allows you to collect data -More on setting up experiments soon
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Chapter 1: The Scientific Study of Life The scientific method includes: Drawing a conclusion -Is your hypothesis supported or not?
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Chapter 1: The Scientific Study of Life Scientific method in action: Hypothesis
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