Campbell Essential Biology (7th Edition)
7th Edition
ISBN: 9780134765037
Author: Eric J. Simon, Jean L. Dickey, Jane B. Reece
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 reactions of the Calvin cycle are not directly dependent on light, and yet they usuallydo not occur at night. Why?
Why are the reactions of the Calvin cycle sometimes referred to as the dark reactions? Do they take place only at night or are they grim, secret reactions?
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?
Chapter 7 Solutions
Campbell Essential Biology (7th Edition)
Ch. 7 - The light reactions take place in the structures...Ch. 7 - In terms of the spatial organization of...Ch. 7 - Prob. 3SQCh. 7 - Prob. 4SQCh. 7 - Prob. 5SQCh. 7 - Prob. 6SQCh. 7 - Prob. 7SQCh. 7 - Prob. 8SQCh. 7 - Prob. 9SQCh. 7 - For each statement, identify which major theme is...
Ch. 7 - For each statement, identify which major theme is...Ch. 7 - For each statement, identify which major theme is...Ch. 7 - Tropical rain forests cover only about 3% of...Ch. 7 - Suppose you wanted to discover whether the oxygen...Ch. 7 - Interpreting Data In the following graph, called...Ch. 7 - There is general agreement within the scientific...Ch. 7 - Burning biomass to produce electricity avoids many...
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- Why is the Calvin Cycle referred to as the dark reactions, or light-independent reactions?.arrow_forwardHow many different types of reactions (e.g., phosphorylation, isomerization) occur in the Calvin cycle?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_forward
- 1) The light reactions begin with sunlight striking a photosystem. Which photosystem is this and what happens to the electrons there? 2) What happens to this first photosystem to prepare it to become activated by additional sunlight? 3) Why are there two different photosystems in the light reactions. 4) Where do these electron reside at the end of the Calvin Cycle (dark reactions)?arrow_forwardWhat is the evolutionary advantage to organisms that the Calvin cycle has a number of reactions in common with other pathways?arrow_forwardDuring which stage of the dark reaction or Calvin cycle is G3p produced?arrow_forward
- 2c. 2d. We know that most pigments are found in the chloroplasts of eukaryotic cells. Specifically WHERE is chlorophyll located in the chloroplast? Some PROKARYOTES are photosynthetic. Predict where the pigments might be located in these cells. Activity #3. Determining optimal wavelength of light used during spinach leaf photosynthesis Note: You'll need to read through this lab exercise and your textbook to answer these questions. Answer choices for questions #1-4 (Each answer can be used more than ADP ATP CO₂ Glucose H₂O Light NADP+ NADPH 0₂ 3. Which of the above are directly required by the light reactions? Hint: See the photosynthesis chapter in your textbook. 4. Which of the above are directly produced by the light reactions? 5. Which of the above are directly required by the Calvin cycle? 6. Which of the above are directly produced by the Calvin cycle? 11 7. (a) In our experiment, what will cause the leaf discs to float? (b) The greater the number of floating discs, the (greater…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_forwardA 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_forward
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