AP Biology Chap. 7 Photosynthesis Study Guide Be very familiar with the following terms and how they apply to the study of photosynthesis: photorespiration stroma bundle sheath cells stroma granum mesophyll cells thylakoid ATP CAM plants stoma (stomata) NADP+ NADPH C3 plants photosystems I & II chloroplasts C4 plants Calvin - Benson cycle chemiosmosis photosystems I and II light-dependent cycle photolysis chemoautotrophs Know: What are photoautotrophs? What sort of organisms can be photoautotrophs? Know the parts of a chloroplast. The various photosynthetic pigments and the colors of light they absorb and reflect What is a photosystem? Where the photosystems are located in a plant and the two types of photosystems The reactants, products, and processes of the light and dark reactions (very important) Know where in a chloroplast the two photosynthetic reactions take place The difference between C3, C4, and CAM plants (why they have the designation and how they fix carbon under adverse conditions) Know some examples of each type. What does CAM stand for? How ADP becomes ATP and when this occurs during photosynthesis How NADP+ becomes NADPH; during which photosynthetic cycle, and the purpose of NADPH in photosynthesis What is the hydrogen (electron) acceptor in the light-dependent reactions? When is oxygen formed in photosynthesis? From what molecule does the oxygen come from that is released during photosynthesis? How does CO2 enter a plant? How many CO2 molecules are needed to make one molecule of glucose? Under what conditions does a plant undergo photorespiration? Why is this bad for the plant?