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Biology: What Is the Study of Life?

Biology: What Is the Study of Life?. Why Study Biology?. Two important reasons for studying Biology: Biology is relevant to our everyday experience Medical advances Addressing needs of growing human population Challenges of decreasing rate of biodiversity Biotechnology advances.

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Biology: What Is the Study of Life?

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  1. Biology: What Is the Study of Life?

  2. Why Study Biology? • Two important reasons for studying Biology: • Biology is relevant to our everyday experience • Medical advances • Addressing needs of growing human population • Challenges of decreasing rate of biodiversity • Biotechnology advances

  3. Why Study Biology? • Biology can be controversial • Examples: • Dealing with endangered species? • Use of human fetal tissue in biomedical research? • Safety of irradiated foods? Figure 1-1c

  4. What is Biology? • It is the study of life. • Branch of science • A way of understanding nature. • A human endeavor • An attempt to understand, explain, integrate and describe the world of living things.

  5. What is Life? • Living organisms: • Highly organized and complex. • Are composed of one or more cells. • Contain a blueprint of their characteristics. • Acquire and use energy. • Carry out and control numerous reactions.

  6. What is Life? • Living organisms: • Grow. • Maintain constant internal environment. • Produce offspring. • Respond to environmental changes. • May evolve. Insert F01_03b

  7. Biology is a Branch of Science • Both an activity and body of knowledge. • A way of understanding the natural world. • Scientists make predictions and test those predictions.

  8. Major Themes in Biology • Evolution by Natural Selection • Inheritance • Cells • Biological Classification • Bioenergetics • Homeostasis • Ecosystems

  9. How is Biology studied? Insert F01-06

  10. Scientific Method • Begins with observations about our surroundings. • Next, ask questions about the phenomena we are observing.

  11. Scientific Method • Followed by generating a hypothesis. • Tentative explanation to the question.

  12. Scientific Method • Testing • Scientists perform tests to determine the accuracy of their hypothesis.

  13. Scientific Method • Explanation • It is a hypothesis that has passed the widest and most comprehensive series of tests. • Still subject to review and consideration. • May be elevated to a theory = well demonstrated principle.

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