1. Ch. 5: “Photosynthesis & Cellular Respiration”
Section 2: “Photosynthesis”

2. Matching
A. Stage 1 of photosynthesis B. Stage 2 of photosynthesis C. Stage 3 of photosynthesis B 1. Excited electrons are passed along an electron transport chain. B 2. Light energy is stored as ATP and NADPH. C 3. Calvin cycle A 4. Pigment molecules absorb energy. C 5. Organic compounds are formed using carbon dioxide.

3. Multiple Choice
6. In the second stage of photosynthesis, hydrogen ions are pumped A. down their concentration gradient. B. out of the thylakoids. C. into the thylakoids. D. Both A and B 7. Products of the Calvin cycle are A. three-carbon sugars. B. used to produce organic compounds. C. used to regenerate the initial five-carbon compound. D. All of the above

4. Multiple Choice
8. Yellow and orange plant pigments are known as which of the following? A. chlorophyll B. electron transport chains C. carotenoids D. thylakoids 9. The rate of photosynthesis decreases as the A. oxygen concentration decreases. B. carbon dioxide concentration decreases. C. light intensity increases. D. All of the above

5. Multiple Choice
10. The reactions of the electron transport chains occur in the structure labeled A. A. B. B. C. C. D. D.