Biology
12th Edition
ISBN: 9780078024269
Author: Sylvia Mader, Michael Windelspecht
Publisher: McGraw-Hill Education
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Chapter 7, Problem 8A
RuBP carboxylase is the enzyme that fixes carbon dioxide to RuBP in the Calvin cycle.
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In the Calvin cycle, what is the name of the enzyme that attaches a molecule of carbon dioxide to the 5-carbon molecule called ribulose bisphosphate?
Glyceraldehyde 3-phosphate
Ribulose bisphosphate oxygenase
Ribulose bisphosphate carboxylase, also known as RuBisCO
3-PGA carboxylase
Which of the following lists the stages of the Calvin cycle in order, starting with the stage where carbon dioxide is added?
PGAL synthesis → carbon fixation → light reactions → regeneration of RuBP
carbon fixation → PGAL synthesis → regeneration of RuBP
regeneration of RuBP → carbon fixation → PGAL synthesis
photorespiration → PGAL synthesis → regeneration of RuBP → carbon fixation
What is the name of the molecule that transports high energy electrons from the light reactions to the Calvin Cycle?
ADP
NAD
ATP
NADP
Chapter 7 Solutions
Biology
Ch. 7.1 - Describe three major groups of photosynthetic...Ch. 7.1 - Prob. 2CYPCh. 7.2 - Explain how redox reactions are used in...Ch. 7.2 - Prob. 2CYPCh. 7.3 - Prob. 1CYPCh. 7.3 - Prob. 2CYPCh. 7.4 - Describe the three major steps of the Calvin...Ch. 7.4 - Prob. 2CYPCh. 7.5 - Prob. 1CYPCh. 7.5 - 2. Explain why C4 photosynthesis is advantageous...
Ch. 7 - Prob. 1BS.1QCCh. 7 - Prob. 1BS.2QCCh. 7 - Prob. 1ACh. 7 - Prob. 2ACh. 7 - Prob. 3ACh. 7 - Prob. 4ACh. 7 - Prob. 5ACh. 7 - Prob. 6ACh. 7 - Prob. 7ACh. 7 - RuBP carboxylase is the enzyme that fixes carbon...Ch. 7 - Prob. 9ACh. 7 - Prob. 10ACh. 7 - Prob. 11ACh. 7 - Prob. 12ACh. 7 - Prob. 13ACh. 7 - Prob. 1TSCh. 7 - Prob. 2TS
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- Which of the following substances does not participate in the Calvin-Benson cycle? a. ATP c. NADPH e. PGAL b. O2 d. RuBP f. CO2arrow_forwardWhich part of the Calvin cycle would be affected if a cell could not produce the enzyme RuBIsCO?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_forward
- The output of the Calvin cycle is G3P (Glyceraldehyde 3-p). The calvin cycle makes 6 of these , but only one leaves to be used by the plant. What happens to the other 5, and why is this necessary?arrow_forwardWhat happens during the regeneration stage of the Calvin Cycle? Energy from ATP and electrons from NADPH are used to reduc 3-phosphoglycerate to form G3P molecules (which can be used to form other organic molecules such as glucose) The remaining G3P molecules that have not exited the cycle are used to re-form RuBP through a series of chemical reactions, so that the Calvin cycle can continue Oxygen is produced through this process The enzyme Rubisco attaches to CO2 to RuBP, causing the formation of molecules of 3-phosphoglyceratearrow_forwardWhy is the third stage of the Calvin cycle called the regeneration stage?arrow_forward
- What happens during the carbon fixation stage of the Calvin Cycle (light-indepedent reactions)? Energy from ATP and electrons from NADPH are used to reduce 3-phosphoglycerate to form G3P molecules (which can be used to form other organic molecules such as glucose) Oxygen is produced through this process The remaining G3P molecules that have exited the cycle are used to re-form RuBP through a series of chemical reactions, so that the Calvin cycle can continue. The enzyme Rubisco attaches to RuBP, causing the formation of molecules of 3-phosphoglyceratearrow_forwardWhat is the carbon-fixing enzyme of the Calvin-Benson cycle? Chlorophyll a Stroma Rubisco ATP synthasearrow_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
- 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_forwardWhich of the following are products of the Calvin cycle that are then used as reactants in the light reactions? CO2 Sugar NADP+ O2 ATP NADPH ADP .arrow_forwardHow much NADPH and ATP is required to make one hexosemolecule by the Calvin cycle?arrow_forward
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