The science of biology

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Unit One Biology

Unit One Biology

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  • 1. Biology
    The Nature of Science
  • 2. Language of Science
    Bios – life
    Ology – the study of
    Etymology – the study of language or words
    The etymological background of the word science is from the Latin word scientia, meaning knowledge.
    Latin or Greek backgrounds
  • 3. Branches of Biology
    Botany – the study of plants
    Zoology – the study of animals
    Ecology – the study of interactions among organisms and between organisms and their environment
  • 4. What is Science?
    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.
    Biology is the science that seeks to understand the living world.
    The goal of science is to investigate and understand nature, to explain events in nature, and to use those explanations to make useful predictions.
  • 5. Science begins with observations – often taking data on what you see, hear or smell ( The five senses)
    data – the information gathered from observations

  • 6. Types of Data
    Quantitative – numbers, measurements
    Qualitative – characteristics, descriptive
  • 7. ????’s
    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)
    Hypothesis – a proposed scientific explanation.  This statement is testable and can be confirmed with experimentation or further observation.
    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)
  • 8. Steps of the Scientific Method
    Ask questions, make observations
    Gather information
    Form a hypothesis
    Set up a controlled experiment
    Manipulated variable – the variable that is deliberately changed (independent variable)
    Responding variable – variable that is observed (dependent variable)
  • 9. Scientific method cont.
    5. Record and analyze results
    6. Draw a Conclusion
    7. Repeat
    * See Scientific method in action