Biology (MindTap Course List)
11th Edition
ISBN: 9781337392938
Author: Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. Berg
Publisher: Cengage Learning
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Textbook Question
Chapter 9, Problem 2TYU
In photolysis some of the energy captured by chlorophyll is used to split (a) CO2 (b) ATP (c) NADPH (d) H2O (e) both b and c
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If ribulose bisphosphate were removed from a chloroplast, which of the following statements would BEST describe the immediate result?
b)ATP could not be produced in the thylakoid
a) CO2 could not enter the Calvin cycle
d) Light energy could not be trapped in the grana
c) 02 could not enter the Calvin Cycle
In the photosynthetic formation of ATP, the enzyme ATP synthase couples the synthesis of ATP to:
A. the diffusion of protons
B. the reduction of NADP+
C. the excitation of chlorophyll
D. the reduction of chlorophyll
E. CO2 fixation
The overall process of photosynthesis
a. results in the reduction of CO2 and the oxidation of H2O.
b. results in the reduction of H2O and the oxidation of CO2.
c. consumes O2 and produces CO2.
d. produces O2 from CO2.
Chapter 9 Solutions
Biology (MindTap Course List)
Ch. 9.1 - Describe the physical properties of light and...Ch. 9.1 - Prob. 1CCh. 9.1 - Prob. 2CCh. 9.2 - Diagram the internal structure of a chloroplast...Ch. 9.2 - Prob. 3LOCh. 9.2 - Prob. 1CCh. 9.2 - What is the significance that the combined...Ch. 9.2 - Prob. 3CCh. 9.3 - Describe photosynthesis as a redox process.Ch. 9.3 - Distinguish between the light-dependent reactions...
Ch. 9.3 - Prob. 1CCh. 9.3 - In what ways do the carbon fixation reactions...Ch. 9.4 - Describe the flow of electrons through...Ch. 9.4 - Explain how a proton (H+) gradient is established...Ch. 9.4 - Prob. 1CCh. 9.4 - Prob. 2CCh. 9.4 - PREDICT Can cyclic electron transport alone...Ch. 9.5 - Summarize the three phases of the Calvin cycle and...Ch. 9.5 - Prob. 9LOCh. 9.5 - Prob. 10LOCh. 9.5 - Describe what happens in each of the three phases...Ch. 9.5 - A decrease in entropy occurs during the CO2 uptake...Ch. 9.5 - In what ways does photorespiration differ from...Ch. 9.5 - Prob. 4CCh. 9.6 - Prob. 11LOCh. 9.6 - Prob. 1CCh. 9.7 - State the importance of photosynthesis both in a...Ch. 9.7 - Prob. 1CCh. 9.7 - Prob. 2CCh. 9 - Where is chlorophyll located in the chloroplast?...Ch. 9 - In photolysis some of the energy captured by...Ch. 9 - Prob. 3TYUCh. 9 - In ________, electrons that have been energized by...Ch. 9 - The Calvin cycle begins when CO2 reacts with (a)...Ch. 9 - The enzyme directly responsible for almost all...Ch. 9 - Prob. 7TYUCh. 9 - An organism characterized as a photoautotroph...Ch. 9 - VISUALIZE Draw a simple sketch illustrating a...Ch. 9 - Prob. 10TYUCh. 9 - Prob. 11TYUCh. 9 - Prob. 12TYUCh. 9 - CONNECT High-energy electrons from glucose are...Ch. 9 - PREDICT What would life be like for...Ch. 9 - EVOLUTION LINK Propose an explanation for...Ch. 9 - INTERPRET DATA The figure depicts the absorption...Ch. 9 - SCIENCE, TECHNOLOGY, AND SOAETY What strategies...
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- Heat energy was not identified in the photosynthesis equation, yet gardeners will tell you that the warmth of the greenhouse is advantageous in producing healthy and faster growing plants. How do you explain this?arrow_forwardWhat do photosynthesis and cellular respiration have in common? Which ones are true? A. Both have large protein complexes that pump electrons across a membrane. b. Both require oxygen as an electron acceptor. c. Both have electron transport chains that begin with electrons from a high energy electron carrier. d. Both utilize the energy from a gradientarrow_forward________ reactions of photosynthesis generate NADPH and ATP to carry solar energy. a. The light-independent b. The light-dependent c. Both the light-dependent and -independentarrow_forward
- Using the graph comparing photosynthetic rate and absorption of different wavelengths of light, what can be concluded? a) The photosynthesis rate at 550 nm is the highest b) Chlorophyll a absorbs wavelengths at both ends of the spectrum c) Chlorophyll b is associated with the greatest rate of photosynthesis. d) Carotenoids absorb the narrowest range of wavelengths of lightarrow_forwardIf you can observe plant lovers, they usually water their plants early in the morning and/or late afternoon. How are watering plants related to the process of photosynthesis?arrow_forwardThe overall flow of electrons in the light reactions is from a. antenna pigments to the reaction center. b. H2O to CO2. c. photosystem I to photosystem II. d. H2O to NADPH.arrow_forward
- The ultimate source of energy in our planet is sunlight. In the first stage of photosynthesis, light energy is captured in chlorophyll-containing reaction centers (PSII and PSI). What is the first step in the capture of light energy at PSII? a. The energy carriers ATP and NADPH + H+ are synthesized. b. CO2 reacts with the C5 sugar ribulose-1,5-bis-phosphate in the first step of the Calvin cycle. c. Starch is synthesized. d. H2O is photolyzed and its electrons are captured by special chlorophyll molecules. e. Sucrose is synthesized from glucose and fructose.arrow_forwardPlants undergo both photosynthesis and cellular respiration. Why don’t plants simply use the ATP pro¬duced in the light reactions of photosynthesis to drive cellular processes? A) The ATP produced during photosynthesis is chemically different from the ATP produced during cellular respiration and cannot be used for anabolic reactions B) ATP cannot be stockpiled so the plants would have no energy during non-daylight hours C) The plants have no way of getting the ATP made during photosynthesis out of the chloroplasts to the rest of the cell D) Plants rely on cellular respiration to remove excess O2 and prevent photorespirationarrow_forwardPlants must obtain CO2 but avoid the loss of H2O by evaporation. What would be the effect of increased atmospheric [CO2] on photosynthesis?Would the effect be the same for C3 and C4 plants?arrow_forward
- Both NADPH and the related carrier molecule NADH are strong electron donors. Why might plant cells have evolved to rely on NADPH, rather than NADH, to provide the reducing power for photosynthesis?arrow_forwardWhen oxygen gas is released as a result of photosynthesis, it is a direct byproduct of what process? a. splitting of water molecules b. the electron transfer system in the photosystems c. chemiosmosis d. reducing of NADP+arrow_forwardIf chlorophyll is extracted from plant cells and exposed to light, it absorbs light energy momentarily and this energy is almost immediately reradiated as light. Thus chlorophyll molecules can not cause photosynthesis by themselves. Why? What is required for photosynthesis to occur?arrow_forward
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