Life: The Science of Biology, Ninth Edition Sadava • Hillis • Heller • Berenbaum CH 10 Photosynthesis: Energy from Sunlight

1. Which of the following biological groups is dependent on photosynthesis for its survival? a. Vertebrates b. Mammalia c. Fishes d. Plants e. All of the above Answer: e Textbook Reference: 10.0 Photosynthesis and global climate change Page: 189 Bloom’s Category: 2. Understanding 2. The Intergovernmental Panel of Climate Change, sponsored by the United Nations, may be able to impact global climate change by a. wavelengths of lights that are not part of the absorption spectrum. b. light energy that is not absorbed. c. inefficiency of light reactions that convert light to chemical energy. d. reducing carbon dioxide emissions. e. inefficiency chemical energy storage of photosynthetic products. Answer: d Textbook Reference: 10.0 Photosynthesis and global climate change Page: 189 Bloom’s Category: 2. Understanding 3. As atmospheric CO2 rises globally, it is known there will be a. an increase in photosynthetic rate. b. an increase in temperature. c. an increase in rainfall. d. a decrease in temperature. e. a decrease in rainfall. Answer: a Textbook Reference: 10:0 Photosynthesis and global climate change Page: 189 Bloom’s Category: 2. Understanding 4. Global climate change may a. increase photosynthetic rate. b. increase plant growth. c. change temperature throughout the globe. d. necessitate a change in the crops grown. e. All of the above Answer: e Textbook Reference: 10.0 Photosynthesis and global climate change Page: 189 Bloom’s Category: 2. Understanding 5. Which of the following is the revised, balanced equation for the generation of sugar from sunlight, water, and CO2? a. 6 CO2 + 6 H2O → C6H12O6 + O2 b. 6 CO2 + 12 H2O → C6H12O6 + 6 O2 + 6 H2O c. 6 CO2 + 6 H2O → C6H12O6 + 6 O2 d. 12 CO2 + 12 H2O → 2 C6H12O6 + 2 O2 e. None of the above Answer: b Textbook Reference: 10.1 What Is Photosynthesis? Page: 190 Bloom’s Category: 2. Understanding 6. Which of the following statements about photosynthesis is false? a. The water for photosynthesis in land plants comes primarily from the soil. b. CO2 is taken in, and water and O2 are released through stomata. c. Light is necessary for the production of O2 and carbohydrates. d. Photosynthesis is the reverse of cellular respiration. e. All the O2 gas produced during photosynthesis comes from water. Answer: d Textbook Reference: 10.1 What Is Photosynthesis? Page: 190–191 Bloom’s Category: 2. Understanding 7. The first phase of photosynthesis, a series of reactions that requires the absorption of photons to form ATP and NADPH, is referred to as the phase. a. reduction b. dark reactions c. carbon fixation d. light reactions (or photophosphorylation) e. None of the above Answer: d Textbook Reference: 10.1 What Is Photosynthesis? Page: 191 Bloom’s Category: 2. Understanding 8. Which of the following occurs during the light-independent reactions of photosynthesis? a. Water is converted into hydrogen and water. b. CO2 is converted into sugars. c. Chlorophyll acts as an enzyme. d. Nothing occurs; the plant rests in the dark. e. None of the above Answer: b Textbook Reference: 10.1 What Is Photosynthesis? Page: 191 Bloom’s Category: 2. Understanding 9. When a suspension of algae is incubated in a flask in the presence of light and CO2 and then transferred to the dark, the reduction of 3-phosphoglycerate to glyceraldehyde 3- phosphate is blocked. This reaction stops when the algae are placed in the dark because a. the reaction requires CO2. b. the reaction is exergonic. c. the reaction requires ATP and NADPH + H+. d. the reaction requires O2. e. chlorophyll is not synthesized in the dark. Answer: c Textbook Reference: 10.1 What Is Photosynthesis? Page: 191 Bloom’s Category: 4. Analyzing 10. When a photon interacts with molecules such as those within chloroplasts, the photons may a. bounce off the molecules, having no effect. b. pass through the molecules, having no effect. c. be absorbed by the molecules. d. Both a and c e. All of the above Answer: e Textbook Reference: 10.2 How Does Photosynthesis Convert Light Energy into Chemical Energy? Page: 192 Bloom’s Category: 2. Understanding