CAMPBELL BIOLOGY-MASTERING BIO.ACCESS
12th Edition
ISBN: 9780136486787
Author: Urry
Publisher: SAVVAS L
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Chapter 10.4, Problem 4CC
Summary Introduction
To find: To draw the Calvin cycle and find how the number of carbon atoms remains constant after every cycle.
Introduction:
Calvin cycle is a cascade of reactions that cause carbon fixation entered as carbon dioxide (CO2) into the plants. It is also known as the C3 cycle that takes place in the chloroplast of the bundle-sheath cells of the plant leaves.
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The equation for photosynthesis is 6CO2 + 6H2O + Sunlight --> C6H12O6 + 6O2. Explain the role of each of the products (left side of the arrow) and explain where the products (right side of the arrow) came from.
a)
Draw the carboxylation reaction mechanism catalyzed by Rubisco. Include the substrates, products, key amino acid residues in the active site, and important metal ions.
b)
Describe each step in the Rubisco carboxylation reaction and why the carbamylated lysine is critical for enzyme activity.
c.
Describe the purpose of the "regeneration stage" of the Calvin-Benson cycle.
If we use ribulose-5-phosphate that has been labeled with 14C isotope at the Carbon 1 position in the carbon reactions (of the Calvin Cycle), on which carbon of 3-PG should we see the labeled C atom appear? Explain.
Chapter 10 Solutions
CAMPBELL BIOLOGY-MASTERING BIO.ACCESS
Ch. 10.1 - Prob. 1CCCh. 10.1 - Prob. 2CCCh. 10.2 - Prob. 1CCCh. 10.2 - Prob. 2CCCh. 10.2 - Prob. 3CCCh. 10.3 - Prob. 1CCCh. 10.3 - Prob. 2CCCh. 10.3 - Prob. 3CCCh. 10.4 - Prob. 1CCCh. 10.4 - Prob. 2CC
Ch. 10.4 - Prob. 3CCCh. 10.4 - Prob. 4CCCh. 10.4 - Prob. 5CCCh. 10.5 - Prob. 1CCCh. 10.5 - Prob. 2CCCh. 10.5 - Prob. 3CCCh. 10.5 - Prob. 4CCCh. 10.6 - Prob. 1CCCh. 10 - Prob. 10.1CRCh. 10 - Prob. 10.2CRCh. 10 - Prob. 10.3CRCh. 10 - Prob. 10.4CRCh. 10 - Prob. 10.5CRCh. 10 - Prob. 10.6CRCh. 10 - The light reactions of photosynthesis supply the...Ch. 10 - Which of the following sequences correctly...Ch. 10 - How is photosynthesis similar in C4 plants and CAM...Ch. 10 - Prob. 4TYUCh. 10 - Prob. 5TYUCh. 10 - In mechanism, photophosphorylation is most similar...Ch. 10 - Prob. 7TYUCh. 10 - Prob. 8TYUCh. 10 - EVOLUTION CONNECTION Photorespiration can decrease...Ch. 10 - SCIENTIFIC INQUIRY MAKE CONNECTIONS The following...Ch. 10 - Prob. 11TYUCh. 10 - SYNTHESIZE YOUR KNOWLEDGE Watennelon snow in...
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- In 150 word count with reference answer the below question The equation for photosynthesis is 6CO2 + 6H2O + Sunlight --> C6H12O6 + 6O2. Explain the role of each of the products (left side of the arrow) and explain where the products (right side of the arrow) came from.arrow_forwardWhich of the following statements about the Calvin-Benson cycle is TRUE?arrow_forwardWhat are the stages of the Calvin-Benson cycle? Select all that apply. The resulting unstable six-carbon molecule splits into two three-carbon molecules of PGA. ATP and NADPH are used to convert PGA molecules to PGAL. Most of the PGAL is used to regenerate RuBP, but some is exported to the cytoplasm to produce carbohydrates. Rubisco attaches CO2 to a five-carbon organic compound called RuBP. Rubisco is used to convert PGA molecules to PGAL.arrow_forward
- Describe and explain the cellular locations and processes of Energetic Coupling (at least 2 types!) that occur in the Light Reactions and "Dark" Reactions of Photosynthesis.arrow_forwardExplain how CO2 is "fixed" by the Calvin cycle and converted into glyceraldehyde 3-phosphate. (i.e. explain how the whole Calvin cycle works)arrow_forwardOxygenic photosynthesis in eukaryotes (in the chloroplasts of green algae and green plants) consumeswhich of the following substrate molecules (to generate glucose, water, and oxygen product molecules)?A. C12H22O11 + H2OB. C6H12O6 + 6O2 + 6H2OC. 6CO2 + 12H2OD. C6H12O6 + C6H12O6E. 6CO2 + 12H2Sarrow_forward
- Describe the Calvin Cycle of Photosynthesis and its function. What are some of the products that can be made from the Calvin cycle? Explain how the enzyme ribulosebisphosphate carboxylase catalyzes a reaction (RuBisCo).arrow_forwardFor the following questions, choose one to discuss: chloroplast/photosynthesis State at the outset which one you will discuss. A) What role do proton gradients play in the process of photosynthesis proton gradients allow B) Where are proton gradients formed? Within what structures are they seen in chloroplasts How do the structures help them to maintain a gradient? C) Explain where and how the chloroplast or mitochondria uses passive transport and active transport to complete photosynthesis or cellular respiration.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
- You will create a slide show/ Canva/ Website on the flow chart of photosynthesis phases .Your poster should include, but is not limited to:○ The overall equation is at the top.○ A diagram of a chloroplast which indicates where each reactant is used and whereeach product is synthesized. ○ All intermediary steps were studied in the light-dependent reactions and light-independent reactions, in the form of a flow chart(try to add details around them), using appropriate terminology. ● You will also submit a detailed explanation of your flow chart, using appropriateterminology.arrow_forwardThe complex chemical reactions that occur in living organisms can sometimes be summarized with chemical equations. The overall process of photosynthesis and aerobic respiration can both be summarized in this way. For the following equations, first determine whether each is summarizing photosynthesis or aerobic respiration, and then click on each of the boxes below the equations and correctly label all of the reactants and products. The following equation summarizes the reactants and products of A. aerobic respiration B. Photosynthesisarrow_forwardWhich among the following statements is INCORRECT? The first event in the Calvin cycle is the attachment of carbon dioxide to the five-carbon RuBP molecule, which forms a six-carbon molecule that breaks down into two 3PG molecules. The first event in the Calvin cycle is the attachment of carbon dioxide to the five-carbon RuBP molecule, which is a reaction assisted by large quantities of RuBP carboxylase enzyme. The first event in the Calvin cycle is the attachment of carbon dioxide to the five-carbon RuBP molecule, which decreases cell carbon dioxide levels, which increases the diffusion gradient. The first event in the Calvin cycle is the attachment of carbon dioxide to the five-carbon RuBP molecule, which immediately becomes a six-carbon sugar that is the base for starch, sucrose, cellulose, etc.arrow_forward
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