The science of biology


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Unit One Biology

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The science of biology

  1. 1. Biology <br />The Nature of Science<br />
  2. 2. Language of Science<br />Bios – life<br />Ology – the study of<br />Etymology – the study of language or words<br />The etymological background of the word science is from the Latin word scientia, meaning knowledge. <br />Latin or Greek backgrounds<br />
  3. 3. Branches of Biology<br />Botany – the study of plants<br />Zoology – the study of animals<br />Ecology – the study of interactions among organisms and between organisms and their environment<br />
  4. 4. What is Science?<br />Science is an organized way of using evidence to learn about the natural world and the body of knowledge scientists have built up after years of using this process.<br />Biology is the science that seeks to understand the living world.<br />The goal of science is to investigate and understand nature, to explain events in nature, and to use those explanations to make useful predictions.<br />
  5. 5. Science begins with observations – often taking data on what you see, hear or smell ( The five senses)<br />data – the information gathered from observations<br />
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  6. 6. Types of Data<br />Quantitative – numbers, measurements<br />Qualitative – characteristics, descriptive<br />
  7. 7. ????’s<br />Inference –a logical interpretation based on prior knowledge or experience (Ex.  You see a window broken and a baseball on the floor next to the shattered glass.  You can -infer- that a baseball broke your window)<br />Hypothesis – a proposed scientific explanation.  This statement is testable and can be confirmed with experimentation or further observation.<br />Prediction – An if-then statement that shows what you expect to see as a result of an experiment or observation  (Ex.  If fertilizer makes a plant grow faster, then seedlings planted with fertilizer will be taller than the ones planted without fertilizer)<br />
  8. 8. Steps of the Scientific Method<br />Ask questions, make observations<br />Gather information<br />Form a hypothesis<br />Set up a controlled experiment<br />Manipulated variable – the variable that is deliberately changed (independent variable)<br />Responding variable – variable that is observed (dependent variable)<br />
  9. 9. Scientific method cont.<br />5. Record and analyze results<br />6. Draw a Conclusion <br />7. Repeat<br />* See Scientific method in action<br />