Campbell Essential Biology with Physiology (5th Edition)
5th Edition
ISBN: 9780321967671
Author: Eric J. Simon, Jean L. Dickey, Jane B. Reece, Kelly A. Hogan
Publisher: PEARSON
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Chapter 7, Problem 8SQ
Summary Introduction
To explain: The reason that why the reaction of the Calvin cycle are not directly dependent on light and yet they usually do not occur at night.
Introduction:
The Calvin cycle also called as dark reaction because this reaction not depends on light. This cycle takes place in the stromal region of chloroplast where
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The Calvin cycle reactions that fix CO2 do not function in the dark. What are the likely reasons for this? How are these reactions regulated by light?
Why is the Calvin Cycle referred to as the dark reactions, or light-independent reactions?.
How many different types of reactions (e.g., phosphorylation, isomerization) occur in the Calvin cycle?
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Campbell Essential Biology with Physiology (5th Edition)
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- Which part of the Calvin cycle would be affected if a cell could not produce the enzyme RuBIsCO?arrow_forwardWhy must the Light reactions of photosynthesis occur before you begin the Calvin Cycle? What does the calvin cycle produce What is produced during the light reactions that are required for the calvin cycle Why are each of these things required for the calvin cycle?arrow_forwardWhat is the evolutionary advantage to organisms that the Calvin cycle has a number of reactions in common with other pathways?arrow_forward
- The three phases of the photosynthetic dark reactions are andarrow_forwardDuring which stage of the dark reaction or Calvin cycle is G3p produced?arrow_forwardThe Calvin cycle produces sugar from carbon dioxide. How many turns of the Calvin cycle will it take to make one molecule of glucose (C6H12O6)? Explain your answer. Why is water split by PSII in the light reactions?arrow_forward
- 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.arrow_forwardThe high energy molecules that provide the energy to run the reactions of the Calvin cycle are ______________ and ________________. During the first step in the Calvin cycle, a molecule of carbon dioxide gas binds to a 5-carbon molecule called Ribulose 1,5-biphosphate (RuBP). This step of the Calvin cycle is called: ___________________________. After three carbon dioxide molecules have been fixed to three RuBP and the Calvin cycle completes one turn, the organic molecule that is produced is _______________________. Once two of the molecules from the previous blank have been produced, they can combine to make a single six-carbon __________________________ molecule.arrow_forwardWhen a leaf on an oak tree absorbs 15,440 photons, how many glyceraldehyde-3-phosphate molecules can be produced by the Calvin cycle?arrow_forward
- By what oxygen is not produced during photosynthesis?arrow_forwardWhy does it take three turns of the Calvin cycle to produce G3P, the initial product of photosynthesis?arrow_forwardWhich two products of the light-dependent reactions are used up in the Calvin cycle? Rubisco adds a CO2 molecule to a sugar that contains _______ carbons. The reaction product immediately splits into two sugars that each contain _______ carbons. O2 can compete with CO2 for a place in the rubisco active site. As a consequenceO2 is incorporated into RuBP instead of CO2. Why might this be a disadvantage?arrow_forward
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