1. Aim: How are living things similar, chemically? DO NOW: 1.What kind of chemical molecules can we find in our bodies? 2.What does your diet consist of?

2. Chemical Composition All living things are made up of 4 main elements: carbon (C) hydrogen (H) oxygen (O) nitrogen (N) Other elements are also present in small amounts

3. Organic Molecules Contain both carbon and hydrogen Proteins, lipids (fats, oils & waxes), carbohydrates, nucleic acids Ex. Glucose (simple sugar)  C 6 H 12 O 6

7. Lipids

9. Nucleic Acids

10. Inorganic Molecules Do not have carbon & hydrogen together but can have any element combined with other elements Salts, minerals, water (H 2 O) Oxygen (O 2 ), carbon dioxide (CO 2 )

11. Water

12. Other Similarities Made of cells: basic units of structure & function Carry on life processes

13. Levels of Organization in Living Things Cells  Tissues  Organs  Organ Systems  Organism

15. BrainPop Video https://www.brainpop.com/science/matteran dchemistry/bodychemistry/ https://www.brainpop.com/science/matteran dchemistry/bodychemistry/

16. Review Questions 1. What group of organic compounds does DNA belong to? 2. Which organic compounds make up the most mass in a typical body cell? 3. Describe two types of chemical reactions that take place in your bodies, all the time. 4. Why is water, an inorganic compound, so important to your cells?

17. Homework Complete vocabulary handout based on video You can use your textbook for help or the internet