Chapters 1 - 2

1. Chapters 1 - 2

2. Chapter 1 LT’s • I can skim this chapter and use it as a guide to help introduce myself to the 4 Big Ideas in AP Biology: • Evolution, • Energetics and Cellular Processes, • Information and Genetics • Interactions • can summarize and apply all of the different parts of the scientific method. • I can write down the steps of the scientific method • I can explain the difference between a hypothesis and a prediction. • I can describe what is meant by a controlled experiment • I can use scientific notation, and convert units within the metric system. • I can determine what type of graph to use for different data, and interpret the data from graphs.

3. Hypothesis vs. prediction You observe this on your lawn. (insert picture ot cicada molting) You decide that it is an exoskeleton\ molting from a cicada. You look up cicada molting to learn more about this, and learn that cicada exoskeleton (as all insect exoskeletons )are made from chitin You recall that fungi cell walls are also made of chitin. You wish to design an experiment to determine if what you saw was indeed a cicada molting . What is your hypothesis and what is your prediction for this experiment?

4. Cube activity

5. As you observe this next cube… Generate different hypotheses and predicitons regarding this cube. Once you think you have predicted all that you can predict, let me know and I will allow you to look at one corner of the cube. Determine if your hypotheses or predictions need modification.

6. Chapter 2

7. Learning Targets I can identify the elements of life.

8. How we obtain nutrients • In what abiotic form are these chemicals found in nature? • In what chemical form do animals need to obtain these nutrients? • In what chemical form do plants need to obtain these nutrients?

9. LT 2 I can define the different types of chemical bonds and identify the role of electrons in each type of bond: I can distinguish between polar and non-polar covalent bonds. I can identify an ionic bond and explain how it works. I can identify a hydrogen bond and explain how it works. I can explain the relative strengths of each type of bond.

10. What prior knowledge do you need to know to answre this question? A biologist places a plant in a closed chamber. A sensor in the chamber maintains the carbon dioxide level at the normal atmospheric concentration of 0.03%. Another sensor allows the biologist to measure the amount of oxygen produced by the plant over time. If the plant produces 0.001 mole of oxygen in an hour, how much carbon dioxide had to be added to the chamber during that hour to maintain the atmospheric concentration of 0.03%?

11. O2 and NH3 are both small covalent molecules found in cells. NH3 is extremely soluble in the aqueous environment of the cell, while O2 is relatively insoluble. What is the basis for this difference in solubility between the two molecules? Use the diagrams of these molecules below and consider how each would react with water.

12. The molecule diagrammed below can also be represented by the formula CH3COOH.Explain how you could determine which of the bonds between elements in this molecule are polar or nonpolar covalent bonds.