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Biology: What Is the Study of Life?. Why Study Biology? Two important reasons for studying Biology: –Biology is relevant to our everyday experience Medical.

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Presentation on theme: "Biology: What Is the Study of Life?. Why Study Biology? Two important reasons for studying Biology: –Biology is relevant to our everyday experience Medical."— Presentation transcript:

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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