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QUANTITATIVE Photosynthetic Energy Transduction. The amount of energy trapped and the volume of carbon converted to organic form by photosynthetic energy transducers are mindboggling: about 5 × 1016 g of carbon per year over the entire Earth’s surface.
(a) Assuming that the average organic molecule in a cell has about the same proportion of carbon as glucose does, how many grams of organic matter are produced annually by phototrophs?
(b) Assuming that all the organic matter in part a is glucose (or any molecule with an energy content equivalent to that of glucose), how much energy is represented by that quantity of organic matter? Assume that glucose has a free energy content (free energy of combustion) of 3.8 kcal/g.
(c) Referring to the answer for Problem 5-1a, what is the average efficiency with which the radiant energy incident on the upper atmosphere is trapped photosynthetically on the Earth’s surface?
(d) What proportion of the net annual phototrophic production of organic matter calculated in part a is used by chemotrophs?
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Chapter 5 Solutions
Becker's World of the Cell (9th Edition)
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- Explain well. Thank you expert. Asap pleasearrow_forwardNeed help Explainarrow_forward"Energy Transformation" Photosynthesis Answer the following questions correctly and explain your answer. a. What are the basic stages of the Calvin cycle? b. What are the reactants and products of photosynthesis?arrow_forward
- RET or FRET. Resonance energy transfer: a. Results in separation of charge. b. Powers ATP synthesis. c. Allows energy flux in the light-harvesting complex. d. Does not existarrow_forwardHandwritten answers preferably. Someone answered before but just copied the answer that is on chegg.. original work plsarrow_forwardQuestion 5 Review Concept 10.4 Calvin Cycle. Match the term and its description. Each term can only be used once. G3P. ADP, NADP+ and Pi | Choose ) 9 ATP. 6 NADPH, 3 CO2 | Choose J Carbon fixation is catalyzed by this enzyme called | Choose ) This molecule is considered as CO2 acceptor. | Choose J >arrow_forward
BiochemistryBiochemistryISBN:9781305577206Author:Reginald H. Garrett, Charles M. GrishamPublisher:Cengage Learning