Becker's World of the Cell (9th Edition)
9th Edition
ISBN: 9780321934925
Author: Jeff Hardin, Gregory Paul Bertoni
Publisher: PEARSON
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Chapter 11, Problem 11.5CC
Explain how the Calvin cycle fixes three CO2 molecules into a molecule of phosphoglycerate without connecting the three CO2 molecules directly.
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A culture of the single celled organism Chlamydomonas is actively carrying out photosynthesis in the presence of light and CO2. If you turned off the light, how would you expect the amounts of ribulose 1,5-bisphosphate and 3-phosphoglycerate to change over the next minute? How about if you left the light on and removed the CO2? Please answer these questions with specific references to the Calvin cycle.
Name the process of conversion of ADP into ATP during the first phase of photosynthesis.
Draw a diagram of the dark phase of photosynthesis. You must represent this phase in the
form of a cycle indicating the parts of carboxylation, reduction, generation of hexoses and
regeneration. Ribulose, CO2, rubisco, phosphoglycerate (PGA), bisphosphoglycerate,
phosphoglyceraldehyde (PGAL), ATP, ADP, NADPH, NADP, kinase, fructose, and
glucose should appear.
Chapter 11 Solutions
Becker's World of the Cell (9th Edition)
Ch. 11 - Both mitochondria and chloroplasts are...Ch. 11 - In the late 1800s, T. W. Engelmann illuminated...Ch. 11 - How do the type and arrangement of the various...Ch. 11 - An essential structural feature in both...Ch. 11 - Prob. 11.4CCCh. 11 - Explain how the Calvin cycle fixes three CO2...Ch. 11 - What are the major regulatory points in the Calvin...Ch. 11 - Although the typical chemical equation for...Ch. 11 - Prob. 11.8CCCh. 11 - True or False Indicate whether each of the...
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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
- Which of the following scenarios does not occur during the reduction phase of the Calvin Cycle? Hide answer choices Each molecule of 3-phosphoglycerate is phosphorylated by ATP to form 1,3-bisphosphoglycerate. Each molecule of 1,3-bisphosphoglycerate is reduced to glyceraldehyde 3-phosphate by the addition of two electrons from NADPH. Glyceraldehyde 3-phosphate is converted into Ribulose bisphosphate. Some of the glyceraldehyde 3-phosphate molecules are used in carbohydrate production.arrow_forwardIdentify the correct compound to create a chemical equation that represents Photosynthesis. + Drag and drop the right reactants and products of the Light Dependent and Light Independent (aka Dark) Reactions. Chloroplast NADPH NADP+ ADP Water - H20 Calvin Cycle Glucose - C6H1206 ATP Light Reaction Thylakoids Stroma O2 Carbon Dioxide CO2 Identify the reactants and products that are used and given off by plants and animals.arrow_forwardExplain, using a simple diagram, the relationship between acyclic photophosphorylation (photophase) and the Calvin cycle (dark phase).arrow_forward
- There are many similarities between the process of photosynthesis and the process of cellular respiration. Which of the following is an accurate comparison of photosynthesis and cellular respiration? Only cellular respiration involves an electron transport chain that creates a proton motive force driving ATP synthesis. Only photosynthesis involves redox reactions. The intermembrane space of mitochondria serves a similar function as the thylakoid space of chloroplasts. The Calvin cycle and the citric acid cycle have the same function.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_forwardExplain the following statement: The O2 generated by photosynthesis is simply a by-product of the pathway’s generation of carbohydrates and ATP.arrow_forward
- Which 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_forwardWhich of the following statements related to the Calvin Cycle is CORRECT? Six molecules of G3P are produced for every three carbon dioxide that undergo calvin cycle Carbon dioxide is attached to 3-phosphoglycerate resulting is 2 RuBP The regeneration of RuBP is important because it is directly used for the production of starch, cellulose, and glucose. One molecule of G3P exits the calvin cycle and five is used to form glucose for the production of starch, cellulose, and sucrose.arrow_forwardHow many water molecules have to be split as part of the light reactions to produce enough ATP and NADPH for the Calvin cycle to produce one molecule of glyceraldehyde-3-phosphate (G3P)? STROMA (low H+ concentration) Light THYLAKOID SPACE (high H+ concentration) STROMA (low H+ concentration) Photosystem II 4 H+ H₂O 1 1/2 0₂ +2 H+ Thylakoid membrane Cytochrome complex Light Pq 4 H+ Photosystem I Pc ATP synthase ADP + H+ Fd M ATP NADP+ reductase NADP+ + H+ NADPH To Calvin Cyclearrow_forward
- Which statement best describes translation? 00 The process converts an mRNA sequence into a polypeptide. It uses ribosomes to make mRNA. It produces Okazaki fragments. It produces RNA from DNA molecules The process breaks bonds between amino acids.arrow_forwardThe Calvin cycle requires both ATP and NADPH. Which of these molecules provides the major input of energy needed to synthesize carbohydrates?arrow_forwardWhich of the following correctly sequences the steps of non-cyclic electron transport? * Water is oxidized by the capture of light energy; these excited electrons are passed through the dark reactions, returning to chlorophyll during the final light reactions The ATP and NADPH generated by the reactions of photosystem Il and photosystem I are utilized by the Calvin Cycle to build high energy glucose molecules Electrons donated from water molecules pass through photosystem I then O photosystem II before returning to the chlorophyll molecules, generating ATP in the process Chlorophyll molecules absorb UV radiation exciting electrons which flow through photosystem I, returning to the chlorophyll molecules ) This is a required questionarrow_forward
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