1. It’s Alive!!! Or Is It? By: Mr. Hunter

2. What do you think? Living or non-living?

3. ALL LIVING THINGS… 1. …are made of cells. 1. …are made of cells. 2. …sense and respond to change. 2. …sense and respond to change. 3. …reproduce sexually or asexually. 3. …reproduce sexually or asexually. 4. …have DNA. 4. …have DNA. 5. …use energy. 5. …use energy. 6. …grow and develop. 6. …grow and develop.

4. Cells Cell: the smallest unit that can perform all life processes Cell: the smallest unit that can perform all life processes Cells are covered by a membrane and have DNA and cytoplasm Cells are covered by a membrane and have DNA and cytoplasm Organisms may be multi-cellular or uni- cellular. Organisms may be multi-cellular or uni- cellular.

5. Cells

6. Sensing and Responding To Change Stimulus: anything that causes a reaction or change in an organism or any part of an organism Stimulus: anything that causes a reaction or change in an organism or any part of an organism

8. Stimuli Chemicals Chemicals Gravity Gravity Light Light Sound Sound Hunger Hunger Touch Touch

9. Stimuli What are some examples of stimuli that you encounter in your everyday life? What are some examples of stimuli that you encounter in your everyday life? How do you respond to each stimulus? How do you respond to each stimulus?

10. Homeostasis Homeostasis: the maintenance of a constant internal state in a changing environment Homeostasis: the maintenance of a constant internal state in a changing environment How does your body maintain homeostasis when you are extremely cold? How does your body maintain homeostasis when you are extremely hot? How does your body maintain homeostasis when you are extremely cold? How does your body maintain homeostasis when you are extremely hot?

11. Reproduction Compare/contrast sexual and asexual reproduction. Compare/contrast sexual and asexual reproduction. Binary fission is an example of asexual reproduction. Binary fission is an example of asexual reproduction.

12. Reproduction Sexual reproduction Sexual reproduction

13. DNA Deoxyribonucleic acid Deoxyribonucleic acid Controls the structure and function of cells Controls the structure and function of cells Organisms pass copies of their DNA to their offspring (heredity) Organisms pass copies of their DNA to their offspring (heredity)

14. DNA

15. Energy Metabolism: the total of all of the chemical activities that the organism performs Metabolism: the total of all of the chemical activities that the organism performs

16. Living Things Living things grow and develop Living things grow and develop

17. So…. Let’s analyze some examples…. 1. …are made of cells. 1. …are made of cells. 2. …sense and respond to change. 2. …sense and respond to change. 3. …reproduce sexually or asexually. 3. …reproduce sexually or asexually. 4. …have DNA. 4. …have DNA. 5. …use energy. 5. …use energy. 6. …grow and develop. 6. …grow and develop.

18. Key Terms Habitat Habitat Producers Producers Consumers Consumers Decomposers Decomposers Photosynthesis Photosynthesis Amino acids Amino acids Proteins Proteins Carbohydrates Carbohydrates Lipids Lipids Phospholipids Phospholipids Adenosine Triphosphate Adenosine Triphosphate Amino acids Amino acids

19. Chemical Building Blocks of Cells Proteins Proteins Carbohydrates Carbohydrates Lipids Lipids ATP ATP Nucleic Acids Nucleic Acids

20. Proteins Proteins supply the body with the building blocks needed to repair tissues. Proteins supply the body with the building blocks needed to repair tissues.

21. Simple/Complex Carbohydrates

22. Simple/Complex Carbs

23. Lipids Lipids store energy and make up cell membranes. Lipids store energy and make up cell membranes. The cell membrane is a phospholipid bilayer. The cell membrane is a phospholipid bilayer.

25. Generalizations What can you conclude about the fluid surrounding the cell membrane? What can you conclude about the fluid surrounding the cell membrane?

26. ATP Adenosine triphosphate is the major energy carrying molecule in the cell Adenosine triphosphate is the major energy carrying molecule in the cell

27. Nucleic Acids Nucleic acids have the information cells need to make proteins Nucleic acids have the information cells need to make proteins