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, Problem 12TYU
Summary Introduction
To explain:
Whether wild varieties of soybean will have a higher or lower rate of photorespiration.
Concept introduction:
Photorespiration (
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EVOLUTION CONNECTION Photorespiration can decreasesoybeans’ photosynthetic output by about 50%. Would youexpect this figure to be higher or lower in wild relatives ofsoybeans? Why?
You add a chemical to plant leaf cells that binds plastoquinone (PQ), leaving only a small amount of PQ active in the cells. Predict two potential effects that this will have on photosynthesis.
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 light
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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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Similar questions
- For photosynthesis lab in biology 1) This lab uses spinach leaves. Name another plant that would make an interesting comparison to spinach. Explain why you think this leaf would provide an interesting comparison 2) The lights used in this experiment are 60W. What would you predict the effect of having stronger or weaker wattage bulbs would be on your results? Explain. 3)This lab uses 0.2% sodium bicarbonate. What would you predict the effect of raising or lowering the percentage would be on your results? Explain. 4)What are TWO other things that might be manipulated in an experiment using this same protocol other than the type of leaf, percent sodium bicarbonate, and wattage of light bulb? 5) What key thing do you have to look for on the graph to know for certain that your treatment has caused a significant effect?arrow_forwardprovide Hypothesis and conclusion linking your observed trend with the functioning of the light reactions in plants. How does the amount of light received affect the light reactions of photosynthesis?arrow_forwardPhotorespiration can decrease soybean's photosynthetic output by about 50%. Would you expect this value to be higher or lower in wild relatives of soybeans? Why?arrow_forward
- Create a concept map for this. Include all terms. “Photo” Portion of Photosynthesis (“Light Reactions”): Chloroplast, Grana, Thylakoid, Sunlight, Chlorophyll, Photosystem II(ETC), Photosystem I (ETC), High Energy electrons, Proton Gradient, ATP, NADPH, Water, Oxygen, Hydrogen Ions (H+), ADP, NADP+ Use all terms listed. Make as many connections as you can. Be sure your maps are clear.arrow_forwardDid you find evidence that photosynthesis occurs in plants? Explain using your dataarrow_forwardThe most important result of the light-independent (or Calvin Cycle) reactions is: ??? the addition of phosphate to sugar to form sugar-phosphate the synthesis of sugar from CO2 the change of chlorophyll from green to colorless the transfer of electrons to glucose molecules the rearrangement of sugar molecules to form O2 from H2Oarrow_forward
- Rice is the number one food crop, feeding over 50% of the world's population. Some scientists estimate that at the current rate of population growth, rice farmers will need to produce 50% more rice per hectare by 2050. Researchers are working to increase the photosynthetic efficiency of rice to meet the concern over food shortage. Using your knowledge of photosynthesis, suggest features of the plant and photosynthetic process that could be modified.arrow_forwardWhich is NOT an evolutionary adaptation of plants to minimize the costs of photorespiration while also conserving water on hot days? a. Use more ATP to incorporate CO2 into organic compounds, which increases CO2 concentration in the cell. b. Confine the Calvin cycle to specific cells in order to prevent inefficient rubisco binding and net energy loss. c. Binding O2 to rubisco instead of CO2. d. Uptake CO2 only at night and use ATP to fix it into organic acid for later use during the light reactions, which prevents water loss during the day.arrow_forwardResearch about C3, C4, and CAM pathways. Give 1 example of plant that uses each pathway and how it perform photosynthesisarrow_forward
- Read the article by Taub, 2010 and answer the DQs to Unit -6. What is photosynthesis? Discuss the impact of increasing global CO2 levels on photosynthesis. How different photosynthetic plant type (C3 and C4) will respond to increase in CO2. Which plant will be benefitted more C3 or C4? Why?arrow_forwardPlants where light independent reactions take place in the same cells as light dependent reactions (mesophyll cells) are using which kind of photosynthesis? A. C3 only B. C4 only C. Either C3 or CAM D. Either C3 or C4arrow_forwardPhotosynthesis generally takes place in which parts of the plant? Steam and leaf Leaf and other chloroplast bearing plants Bark and leaf Roots and chloroplast bearing plantsarrow_forward
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