Campbell Biology in Focus
3rd Edition
ISBN: 9780134710679
Author: Lisa A. Urry, Michael L. Cain, Steven A. Wasserman, Peter V. Minorsky, Rebecca Orr
Publisher: PEARSON
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Chapter 8.1, Problem 3CC
WHAT IF? The Calvin cycle requires ATP and NADPH, products of the light reactions. If a classmate asserted that the light reactions don’t depend on the Calvin cycle and, with continual light, could just keep on producing ATP and NADPH, how would you respond?
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Q no 2: Describe in detail what happens during the light reactions of photosystems. Use terms such as photosystems (be specific about which is which), pigments, reaction center, water-splitting, NADPH, ATP, ADP, NADP+, oxygen gas, etc?
Q21. Photosynthesis is an oxidation-reduction process.
Which of the following statements about this redox process is correct?
The oxidation of NADPH by the Calvin Cycle is linked to the reduction of CO2.
In the electron transport chain, plastocyanin is easier to be oxidized than PQ.
Following light absorption H2O is oxidized to O2.
Absorption of light by P700 makes it easier to be reduced.
A. 1, 2 and 3
B. 1 and 3
C. 2 and 4
D. 4 only
E. All of 1,2,3 and 4 are correct
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What factors limit productivity? What methods have marine producers evolved to cope with the lack of red light needed by chlorophyll for photosynthesis?
Chapter 8 Solutions
Campbell Biology in Focus
Ch. 8.1 - How do the CO2 molecules used in photosynthesis...Ch. 8.1 - How did the use of an oxygen isotope help...Ch. 8.1 - WHAT IF? The Calvin cycle requires ATP and NADPH,...Ch. 8.2 - What color of light is least effective in driving...Ch. 8.2 - In the light reactions, what is the initial...Ch. 8.2 - Prob. 3CCCh. 8.3 - MAKE CONNECTIONS How are the large numbers of ATP...Ch. 8.3 - WHAT IF? Explain why a poison that inhibits an...Ch. 8.3 - Prob. 3CCCh. 8.4 - Prob. 1CC
Ch. 8 - The light reactions of photosynthesis supply the...Ch. 8 - Which of the following sequences correctly...Ch. 8 - How is photosynthesis similar in C4, plants and...Ch. 8 - Which of the following statements is a correct...Ch. 8 - Which of the following does not occur during the...Ch. 8 - In mechanism, photophosphorylation is most similar...Ch. 8 - Prob. 7TYUCh. 8 - To synthesize one glucose molecule, the Calvin...Ch. 8 - SCIENCE, TECHNOLOGY, AND SOCIETY Scientific...Ch. 8 - DRAW IT The following diagram represents an...Ch. 8 - Prob. 11TYUCh. 8 - Prob. 12TYUCh. 8 - FOCUS ON ENERGY AND MATIER Life is solar powered....Ch. 8 - SYNTHESIZE YOUR KNOWLEDGE Watermelon snow in...
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- Q1: What is the source of the carbon dioxide used for photosynthesis? Q2: Which products of the light reactions of photosynthesis does the Calvin cycle use? Q3: What are the two major products of photosynthesis?arrow_forwardIf four molecules of carbon dioxide enter the Calvin cycle (four “turns” of the cycle), how many G3P molecules are produced and how many are exported? 4 G3P made, 1 G3P exported 4 G3P made, 2 G3P exported 8 G3P made, 1 G3P exported 8 G3P made, 4 G3P exportedarrow_forwardPlease help! Photosynthesis and Cell respiration: A. What should happen to the O2 levels in a closed container containing a plant during the day? why? B. And what happens to the O2 levels during the night (no light)? Why?arrow_forward
- Q) Start with a photon of sunlight and a carbon atom in a molecule of carbon dioxide in the atmosphere: model/diagram their pathway from that starting point to their final destination as a glucose molecule that is used for energy in a cell in the plant root. Following your diagram/model, provide a written explanation for what your diagram/model depicts. Make sure both your model and explanation are clear, concise, and have the appropriate level of detail to clearly demonstrate you understand photosynthesis, cellular respiration, and the movement of mass and energy in plants.arrow_forwardQ no 1: Why photophosphorylation is better than photorespiration?arrow_forward1. Where is photosystem 1 located? what are the inputs and outputs? 2. Where is photosystem 2 located? what are the inputs and outputs? 3. Where is Calvin cycle located? what are the inputs and outputs?arrow_forward
- Q40. Both Photosynthesis and respiration rely on electron transport. Although there are many differences, what do these electron transport chains have in common? In both, the electron donor (water in the case of photosynthesis, NADH in the case of respiration) is a strong reducing agent In both, the proteins which shuttle the electrons (Plastoquinone in photosynthesis, Ubiquinone in the case of respiration) are oxidized and reduced In both, electrons move spontaneously from high to low redox potential. In both, chemiosmosis results in the production of ATP A. 1,2 and 3 B. 1 and 3 C. 2 and 4 D. 4 only E. All of 1, 2, 3 and 4 are correctarrow_forward1. Is carbon dioxide essential for photosynthesis? Justify 2. What is the relationship between photosynthesis efficiency and light intensity? Justify 3. For equal quantities of photons, what is the increasing order of effectiveness (less effective to more effective) of blue, red, green and white light (combination of the three main wavelengths) on photosynthetic activity? Justifyarrow_forwardTags: photosynthesis, plants, biology, chemistry, biochemistry Consider a recently discovered planet that scientists believe is capable of supporting life due to its similarities to the earth. However, its daytime temperature and oxygen content in its atmosphere are HIGHER than earth. Design a plant that can survive and show MAXIMUM photosynthetic efficiency in this planet by enumerating the features (anatomical/metabolic) that you will include and explain why it is necessary to include them.arrow_forward
- Keep answers, short, simple, and concise. No detail required. Is ATP produced during the light reactions or Calvin cycle? How is it made (what process/enzyme)? Only describe the very last step in ATP production. Is ATP consumed during the light reactions or Calvin cycle? What is it’s energy used to do? Is NADPH produced during the light reactions or Calvin cycle? How is it made (what process/enzyme)? Only describe the very last step in NADPH production.arrow_forward1. What is photosynthesis? 2. Give the chemical equation of photosynthesis 3. Explain the importance of chlorophyl and other pigments 4. Describe the pattern of electron flow during a live reaction event? 5. Describe the significant event of the calvin cyclearrow_forwardIn an experiment conducted on photosynthesis-CO2 update and photosynthesis-Determining rate in white light. what gas will be produce as an product of photosynthesis and if present, what will this allow the leaf dice to do? Also, what will be the goal of photosynthesis, and how will it be different from the goal of cellular respiration?arrow_forward
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