1. So why take biology?

2. Your health and the health of the environment depend on your knowledge of biology. Knowledge of biology helps you understand your health. – food allergies – potential effects of obesity

3. – cancer Knowledge of biology helps you understand your health. –effects of alcohol, tobacco, and other drugs brain lungs heart liver kidneys – food allergies – potential effects of obesity

4. Knowledge of biology can help you understand environmental issues. –interactions in ecosystems –biodiversity –pollution

5. Questions are raised about the use of biotechnology. –spread of undesirable genes –decrease in biodiversity –ethical considerations – safety of genetically modified crops

6. Biology presents many unanswered questions. Over the past 50 years, biological knowledge has greatly increased.

7. There are still many questions to answer in biology. –How are memories stored in the brain?

8. There are still many questions to answer in biology. –How are memories stored in the brain? surface proteins lipid envelope nucleic acid capsid –Does life exist on planets other than Earth? –How do viruses mutate?

9. – DNA testing in medicine and forensics Biotechnology is the use and application of living things and biological processes. –transgenic (genetically modified) crops –transgenic bacteria

10. Biotechnology offers great promise but also raises many issues. Biotechnology is the use and application of living things and biological processes.