1. Biology and You Chapter 1

2. Objectives Relate the seven properties of life to a living organism Relate the seven properties of life to a living organism Describe seven themes that can help you organize what you learn about biology Describe seven themes that can help you organize what you learn about biology Identify the tiny structures that make up all living organisms Identify the tiny structures that make up all living organisms Differentiate between reproduction and heredity and between metabolism and homeostasis Differentiate between reproduction and heredity and between metabolism and homeostasis

3. Key Terms Biology Biology Cell Cell Reproduction Reproduction Metabolism Metabolism Homeostasis Homeostasis Gene Gene Heredity Mutation Evolution Species Natural Selection Ecology

4. Biology Biology is the study of life Biology is the study of life

5. What Does it Mean to be Alive?

6. What does it mean to be alive? Life is characterized by the presence of all seven properties at some stage in an organism's life. Life is characterized by the presence of all seven properties at some stage in an organism's life.

7. Seven Properties of Life Cellular organization Cellular organization Reproduction Reproduction Metabolism Metabolism Homeostasis Homeostasis Heredity Responsiveness Growth & Development

8. Unifying Themes of Biology Chapter 1 Section 1

9. Cellular Structure & Function All living things are made of one or more cells All living things are made of one or more cells A cell is the smallest unit capable of all life functions A cell is the smallest unit capable of all life functions

10. Reproduction All living things can reproduce All living things can reproduce Reproduction is the process by which organisms make more of their own kind Reproduction is the process by which organisms make more of their own kind

11. Metabolism All living things use energy to grow, to move, & to process information All living things use energy to grow, to move, & to process information Metabolism is the sum of all chemical reactions carried out in an organism Metabolism is the sum of all chemical reactions carried out in an organism

12. Homeostasis All living organisms must maintain a stable internal environment in order to function properly All living organisms must maintain a stable internal environment in order to function properly Homeostasis is the maintenance of stable internal conditions in spite of changes in the external environment Homeostasis is the maintenance of stable internal conditions in spite of changes in the external environment

13. Heredity All living things are able to pass on traits to their offspring through genes that are passed from parent to offspring each generation All living things are able to pass on traits to their offspring through genes that are passed from parent to offspring each generation Heredity is the reason children tend to resemble their parents Heredity is the reason children tend to resemble their parents

14. Evolution Change in the inherited characteristics of species over generations Change in the inherited characteristics of species over generations

15. Interdependence The organisms in a biological community live & interact with other organisms The organisms in a biological community live & interact with other organisms Ecology is the branch of biology that studies the interaction of organisms with one another & with the non living part of their environment Ecology is the branch of biology that studies the interaction of organisms with one another & with the non living part of their environment

16. Review What are the 7 properties that all living organisms share? What are the tiny structures that make up all living things? What are the unifying themes of biology? Define homeostasis & metabolism & describe their differences.

17. Biology in Your World Chapter 1 Section 2

18. Think About It… In groups of 4 In groups of 4 List five issues in the area of Biology that you believe are important in the world today. List five issues in the area of Biology that you believe are important in the world today. What is being done to solve or better the issues What is being done to solve or better the issues Describe the steps you think might be involved in a scientific investigation Describe the steps you think might be involved in a scientific investigation

19. Scientific Processes Chapter 1 Section 3

20. Objectives Describe the stages common to scientific investigations Describe the stages common to scientific investigations Distinguish between forming a hypothesis & making a prediction Distinguish between forming a hypothesis & making a prediction Differentiate a control group & an independent variable from a dependant variable Differentiate a control group & an independent variable from a dependant variable

21. Key Terms Observation Observation Hypothesis Hypothesis Prediction Prediction Experiment Experiment Control group Independent variable Dependent variable Theory

22. Stages of Scientific Investigations Observation is the act of noting or perceiving objects or events using the senses. Observation is the act of noting or perceiving objects or events using the senses. See, hear, taste, smell, touch See, hear, taste, smell, touch Inference is a statement that explains the observation. Inference is a statement that explains the observation. logical conclusions from premises known or assumed to be true logical conclusions from premises known or assumed to be true

23. Inferences vs. Observations Worksheet Worksheet

24. Stages of Scientific Investigations Hypothesis is an explanation that might be true– a statement that can be tested by additional observations or experimentation. Hypothesis is an explanation that might be true– a statement that can be tested by additional observations or experimentation. Educated guess Educated guess

25. Stages of Scientific Investigations Prediction is the expected outcome of a test, assuming the hypothesis is correct. Prediction is the expected outcome of a test, assuming the hypothesis is correct. Experiment is a planned procedure to test a hypothesis Experiment is a planned procedure to test a hypothesis

26. Structure of an Experiment Control Group is a group in an experiment that receives no experimental treatment Control Group is a group in an experiment that receives no experimental treatment Independent Variable is changed in an experiment Independent Variable is changed in an experiment Dependent Variable is measured in an experiment Dependent Variable is measured in an experiment

27. Scientific Explanations Theory is a set of related hypotheses that have been tested & confirmed many times by many scientists Theory is a set of related hypotheses that have been tested & confirmed many times by many scientists Unites & explains a broad range of observations. Unites & explains a broad range of observations.

28. Review of the Scientific Process Questions Predictions & Hypotheses Experimentation Some hypotheses are supported Related hypotheses are verified by many Theory Some hypotheses are rejected