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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 advances Addressing needs of growing human population Challenges of decreasing rate of biodiversity Biotechnology advances,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,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.,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.,What is Life?,Living organisms: Grow. Maintain constant internal environment. Produce offspring. Respond to environmental changes. May evolve.,Insert F01_03b,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.,Major Themes in Biology,Evolution by Natural Selection Inheritance Cells Biological Classification Bioenergetics Homeostasis Ecosystems,How is Biology studied?,Insert F01-06,Scientific Method,Begins with observations about our surroundings. Next, ask questions about the phenomena we are observing.,Scientific Method,Followed by generating a hypothesis. Tentative explanation to the question.,Scientific Method,Testing Scientists perform tests to determine the accuracy of their hypothesis.,Scientific Method,Explanation It is a hypothesis that has passed the widest and most comprehensive series of tests. Still su
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