Principles of Biology
2nd Edition
ISBN: 9781259875120
Author: Robert Brooker, Eric P. Widmaier Dr., Linda Graham Dr. Ph.D., Peter Stiling Dr. Ph.D.
Publisher: McGraw-Hill Education
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Chapter 7, Problem 6TY
Summary Introduction
Introduction:
The process of photosynthesis occurs in two stages inside a chloroplast. The two stages are light reactions and carbon reactions. The carbon reaction is also known as the Calvin cycle. It takes place in the stroma of chloroplasts.
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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.
Which 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
.
Which 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.
Chapter 7 Solutions
Principles of Biology
Ch. 7.1 - Which types of organisms carry out cellular...Ch. 7.1 - Prob. 1BCCh. 7.1 - Prob. 2CCCh. 7.1 - Prob. 1TYKCh. 7.1 - If you were traveling from the cytosol to the...Ch. 7.1 - Prob. 3TYKCh. 7.2 - Prob. 1CCCh. 7.2 - Prob. 2CCCh. 7.2 - What is the advantage of having different pigment...Ch. 7.2 - Prob. 4CC
Ch. 7.2 - Prob. 5CCCh. 7.2 - Prob. 1TYKCh. 7.2 - Prob. 2TYKCh. 7.2 - What is the purpose of cyclic...Ch. 7.3 - Prob. 1CCCh. 7.3 - Prob. 1TYKCh. 7.3 - Prob. 2TYKCh. 7.4 - Prob. 1CCCh. 7.4 - Prob. 1TYKCh. 7.4 - Prob. 2TYKCh. 7.5 - Prob. 1CCCh. 7.5 - Prob. 1BCCh. 7.5 - What are the advantages and disadvantages for C3,...Ch. 7.5 - Prob. 1TYKCh. 7.5 - An evolutionary adaptation to minimize...Ch. 7 - The water necessary for photosynthesis is split...Ch. 7 - Prob. 2TYCh. 7 - Prob. 3TYCh. 7 - Prob. 4TYCh. 7 - During the first phase of the Calvin cycle, carbon...Ch. 7 - Prob. 6TYCh. 7 - Prob. 7TYCh. 7 - Prob. 8TYCh. 7 - Prob. 9TYCh. 7 - Plants commonly found in hot and dry environments...Ch. 7 - What are the two stages of photosynthesis? What...Ch. 7 - What is the function of NADPH in the Calvin cycle?Ch. 7 - A principle of biology is that living organisms...Ch. 7 - Discuss the advantages and disadvantages of being...Ch. 7 - Prob. 2CBQ
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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 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 fixationarrow_forward
- Place the following steps for one turn of the Calvin Cycle in the correct order. Carbon fixation Production of a 3-Carbon sugar Carbon dioxide (CO2) is taken into the plant. Carbon reduction Regeneration of RuBP (ribulose bisphosphate)arrow_forwardWhich of these is produced during the light-dependent reactions and then used durin the Calvin cycle (light independent reaction)? Glucose H20 G3P NADPHarrow_forwardWhat 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_forward
- During what stage of the Calvin cycle are hexose sugars formed? stage 4 stage 1 stage 5 stage 2 stage 3arrow_forwardWhich of the following are outputs of the Calvin cycle? Choose all that apply. ATP water carbon dioxide gas ADP+P G3P (precursor to glucose) NADPH NADP+ oxygen gas sunlightarrow_forwardProducts of the Calvin cycle include: Hide answer choices ADP, Pi, NADP+ ADP, Pi, NADPH NADPH, Pi, G3P ATP, Pi, G3Parrow_forward
- What 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_forwardThe purpose of the light reactions is to produce, for the Calvin cycle. carbon dioxide and ATP glucose and NADPH ATP and oxygen oxygen and glucose NADPH and ATParrow_forwardWhat is the carbon-fixing enzyme of the Calvin-Benson cycle? Chlorophyll a Stroma Rubisco ATP synthasearrow_forward
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