Biochemistry
9th Edition
ISBN: 9781319114671
Author: Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.
Publisher: W. H. Freeman
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Question
Chapter 20, Problem 3P
Interpretation Introduction
Interpretation: The reason the Calvin cycle is crucial to the functioning of all life forms should be determined.
Concept introduction:
The Calvin cycle is a process used by the plants and algae to convert inorganic carbon dioxide from the atmosphere into carbohydrates, which is important for the growth and functioning of plants.
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Complete the Calvin-Benson cycle if 12 CO2 molecules are fixed. Indicate the number of starting products, intermediates and final products. Count your carbons at each step. How many glucose molecules can be made?
40 words or fewer. Explain why we would not survive without primary producers, in particular photosynthetic organisms. Be as complete and specific as possible within the word limit.
True or False.
The Krebs cycle is considered to be an anabolic pathway because some of the reactions are considered reversible.
Chapter 20 Solutions
Biochemistry
Ch. 20 - Prob. 1PCh. 20 - Prob. 2PCh. 20 - Prob. 3PCh. 20 - Prob. 4PCh. 20 - Prob. 5PCh. 20 - Prob. 6PCh. 20 - Prob. 7PCh. 20 - Prob. 8PCh. 20 - Prob. 9PCh. 20 - Prob. 10P
Ch. 20 - Prob. 11PCh. 20 - Prob. 12PCh. 20 - Prob. 13PCh. 20 - Prob. 14PCh. 20 - Prob. 15PCh. 20 - Prob. 16PCh. 20 - Prob. 17PCh. 20 - Prob. 18PCh. 20 - Prob. 19PCh. 20 - Prob. 20PCh. 20 - Prob. 21PCh. 20 - Prob. 22PCh. 20 - Prob. 23PCh. 20 - Prob. 24PCh. 20 - Prob. 25PCh. 20 - Prob. 26PCh. 20 - Prob. 27PCh. 20 - Prob. 28PCh. 20 - Prob. 29PCh. 20 - Prob. 30PCh. 20 - Prob. 31PCh. 20 - Prob. 32PCh. 20 - Prob. 33PCh. 20 - Prob. 34PCh. 20 - Prob. 35PCh. 20 - Prob. 36PCh. 20 - Prob. 37PCh. 20 - Prob. 38PCh. 20 - Prob. 39PCh. 20 - Prob. 40PCh. 20 - Prob. 41PCh. 20 - Prob. 42PCh. 20 - Prob. 43PCh. 20 - Prob. 44PCh. 20 - Prob. 45PCh. 20 - Prob. 46PCh. 20 - Prob. 47PCh. 20 - Prob. 48P
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- Modified TRUE or FALSE. Write the word TRUE if the statement is correct. If the statement is false, write the incorrect underlined word/s and indicate the correct word/s to make the statement true. Triose phosphate is considered as the net product of the Calvin cycle of photosynthesis, which is then utilized for the synthesis of the end products that are glucose and starch.arrow_forward49. Which of these is NOT true of the citric acid cycle? Group of answer choices The citric acid cycle uses both NAD+ and FADH as electron carriers. The citric acid cycle produces ATP via oxidative phosphorylation. The citric acid cycle produces two ATP per glucose molecule. The citric acid cycle occurs in the mitochondria.arrow_forwardTrue or False: 1. Electron-deficient chlorophyll molecules of PS II receives electron from PS I. 2. Xanthophylls around the reaction centers transfer their energy to chlorophyll molecules. 3. CO2 is fixated when it combines with the phosphate during the initial phase of the Calvin cycle.arrow_forward
- true or false 1. Phosphoenolpyruvate carboxykinase is the enzyme involved in the carbon dioxide fixation in the mesophyll cells of C4 plants 2. The C4 pathway utilizes less ATP than C3 pathway thus enabling C4 plants to adapt to tropical temperatures. 3. Photorespiration occurs when [O2]/[CO2] is high. 4. The carboxylase activity of RuBisCO catalyzes the fixation of carbon dioxide. 5. In cyclic photophosphorylation, only ATP is produced. 6. Chlorophyll has iron as the metal center of the porphyrin ring.arrow_forwardSmall explanation please. what is a product in the first stage of the Q- cycle? a. two electrons b. Q- cation c. cyt c (oxidized) d. two more protons in the matrix e. Q- radical anionarrow_forwardWhich of the following statements about the Calvin-Benson cycle is TRUE?arrow_forward
- Question 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_forwardEnzymatic Hydrolysis of Cooking Oil.arrow_forward02 is neither involved in glycolysis nor citric acid cycle but is still, one cycle is called aerobe and the other anaerobe. Explain which pathway is aerobe and which is anaerobe and why.arrow_forward
- Butch Cassidy and the Sundance Kid. Glutamate dehydrogenase requires which of the following cofactors: a. NAD+/NADP+NAD*/NADP+ b. Pyridoxal phosphate c. Thiamine pyrophosphate d. Biopterinarrow_forwardTCA cycle, the mere fact that it’s a cycle means that you always end the cycle where you began. Why then run the cycle? What are its real products?arrow_forwardStatement 1: In the Calvin Cycle, two molecules of glyceraldehyde 3-phosphate are produced if two molecules of carbon dioxide are fixed. Statement 2: If the carbon fixation phase of the Calvin Cycle begins with 6 molecules of ribulose bisphosphate and 6 molecules of carbon dioxide, 2 out of 12 molecules of glyceraldehyde 3-phosphate made at the end of the reduction phase are used in carbohydrate production while the remaining 10 molecules are needed to keep the Calvin Cycle turning by regenerating ribulose bisphosphate. Hide answer choices Statement 1 is true. Statement 2 is false. Statement 1 is false. Statement 2 is true. Both statements are true. Both statements are falsearrow_forward
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