Campbell Biology (10th Edition)
10th Edition
ISBN: 9780321775658
Author: Jane B. Reece, Lisa A. Urry, Michael L. Cain, Steven A. Wasserman, Peter V. Minorsky, Robert B. Jackson
Publisher: PEARSON
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Chapter 10.1, Problem 3CC
WHAT IF? → The Calvin cycle requires ATP and NADPH, products of the light reactions. If a classmate asserted that the light reactions don’t depend on the Calvin cycle and, with continual light, could just keep on producing ATP and NADPH, how would you respond?
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ATP is produced by chemiosmosis in photosynthesis". Identify where and how this chemical gradient is formed?how this is driving the ATP synthesis. Mention where the light dependent and light independent reactions of photosynthesis take place along with the functional end product(s) of these two stages. Dark and light reactions of photosynthesis are interconnected, how?
In photosynthesis,
reaction?
which of the following is NOT true about the light-dependent ("light”)
Light-excited electrons in chlorophyll provide the energy for ATP production
None of the other four answers (All are true of the light-dependent reaction)
The light-dependent reaction converts light energy to chemical energy stored in ATP
The light-dependent reaction (non-cyclic) captures electrons in NADPH
Glucose is synthesized from CO2 and water during the light-dependent reaction
Answers can be kept very simple and concise
Photosynthesis:
A) Is NADPH consumed during the light reactions or Calvin cycle? What is it’s energy used to do?
Protons move across the thylakoid membrane in both directions during the light reactions of photosynthesis.
B) When protons move in to the thylakoid, are they moving up or down their concentration gradient? (From low to high concentration or from high to low concentration?)
C) Since protons are charged, they cannot freely diffuse across a plasma membrane. What protein(s) facilitate the transport of protons in to the thylakoid?
Chapter 10 Solutions
Campbell Biology (10th Edition)
Ch. 10.1 - Prob. 1CCCh. 10.1 - Explain how the use of an oxygen isotope helped...Ch. 10.1 - WHAT IF? The Calvin cycle requires ATP and NADPH,...Ch. 10.2 - What color of light is least effective in driving...Ch. 10.2 - In the light reactions, what is the initial...Ch. 10.2 - Prob. 3CCCh. 10.3 - To synthesize one glucose molecule, the Calvin...Ch. 10.3 - How are the large numbers of ATP and NADPH...Ch. 10.3 - Prob. 3CCCh. 10.3 - DRAW IT Redraw the cycle in Figure 10.19 using...
Ch. 10.3 - Prob. 5CCCh. 10.4 - Describe how photorespiration lowers...Ch. 10.4 - The presence of only PS I, not PS II, in the...Ch. 10.4 - MAKE CONNECTIONS Refer to the discussion of ocean...Ch. 10.4 - WHAT IF? How would you expect the relative...Ch. 10 - Compare the roles of CO2 and H2O in cellular...Ch. 10 - The absorption spectrum of chlorophyll a differs...Ch. 10 - Prob. 10.3CRCh. 10 - Why are C4 and CAM photosynthesis more...Ch. 10 - The light reactions of photosynthesis supply the...Ch. 10 - Which of the following sequences correctly...Ch. 10 - How is photosynthesis similar in C4 plants and CAM...Ch. 10 - Prob. 4TYUCh. 10 - Prob. 5TYUCh. 10 - In mechanism, photophosphorylation is most similar...Ch. 10 - Prob. 7TYUCh. 10 - Prob. 8TYUCh. 10 - EVOLUTION CONNECTION Photorespiration can decrease...Ch. 10 - SCIENTIFIC INQUIRY MAKE CONNECTIONS The following...Ch. 10 - WRITE ABOUT A THEME: ENERGY AND MATTER Life is...Ch. 10 - SYNTHESIZE YOUR KNOWLEDGE Watennelon snow in...
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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
- What 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_forwardWHAT IF? The Calvin cycle requires ATP and NADPH,products of the light reactions. If a classmate assertedthat the light reactions don’t depend on the Calvin cycleand, with continual light, could just keep on producingATP and NADPH, how would you respond?arrow_forwardProduces 02 as a by-product [ Choose ] NADPH releases high-energy [ Choose ] electrons NADP+ picks up high-energy [ Choose ] electrons Takes place in the thylakoids of [ Choose ] the chloroplasts ATP is broken apart [ Choose ] Includes the electron transport [ Choose ] chain and the H+ gradient ATP is formed [ Choose ] [ Choose ] Requires an input of CO2 Calvin Cycle (synthesis) Light (photo) Reactions Takes place in the stroma of the [ Choose ] 22arrow_forward
- For the following questions, choose one to discuss: chloroplast/photosynthesis State at the outset which one you will discuss. A) What role do proton gradients play in the process of photosynthesis proton gradients allow B) Where are proton gradients formed? Within what structures are they seen in chloroplasts How do the structures help them to maintain a gradient? C) Explain where and how the chloroplast or mitochondria uses passive transport and active transport to complete photosynthesis or cellular respiration.arrow_forwardIS THIS A GOOD BREAK DOWN? WHAT ELSE CAN I SHOULD I ADD? Briefly explain the light-dependent reactions of photosynthesis: where does this take place, what are the reactants and what is produced? Light-dependent reactions are used to convert light energy into chemical energy for use by the plants. Through the process of photosynthesis, the energy collected from the sun is broken down, along with water molecules, to produce NADPH and ATP. Light-dependent reactions Goal Convert light energy into chemical energy Location Chloroplasts—thylakoids Input Sunlight, H2O, NADP+, ADP Output NADPH, ATP, O2arrow_forward. It is believed that the ratio of cyclic photophosphorylation to noncyclic photophosphorylation changes in response to metabolic demands. In each of the following situations, would you expect the ratio to increase, decrease, or remain unchanged? (a) Chloroplasts carrying out both the Calvin cycle and the reduction of nitrite (NO,-) to ammonia (This process does not require ATP.) (b) Chloroplasts carrying out not only the Calvin cyde but also extensive active transport (c) Chloroplasts using both the Calvin cyde and the C, pathwayarrow_forward
- . It is believed that the ratio of cyclic photophosphorylation to non- cyclic photophosphorylation changes in response to metabolic demands. In each of the following situations, would you expect the ratio to increase, decrease, or remain unchanged? (a) Chloroplasts carrying out both the Calvin cycle and the reduction of nitrite (NO, ) to ammonia (This process does not require ATP.) (b) Chloroplasts carrying out not only the Calvin cycle but also extensive active transport (c) Chloroplasts using both the Calvin cycle and the C, pathwayarrow_forwardDiagram 7 11 Phase 1 Phase 3 What enzyme catalyzes the reaction in this phase? Briefly describe what is going on in each phase and answer the questions shown. Phase 1 (Diagram 8) Diagram 8 Description: Phase 2 P CAVIH CYCLE: Phase 1 - Carbon Fixation 3x Plose 1 Phase 3 Phase 2 x6 Barrow_forwardA decrease in entropy occurs during the CO2 uptake phase of the Calvin cycle, as freely moving CO2 molecules become fixed into a carbon skeleton. How can this occur without direct participation by NADPH and/or ATP?arrow_forward
- Create a concept map for this. Include all terms. “Photo” Portion of Photosynthesis (“Light Reactions”): Chloroplast, Grana, Thylakoid, Sunlight, Chlorophyll, Photosystem II(ETC), Photosystem I (ETC), High Energy electrons, Proton Gradient, ATP, NADPH, Water, Oxygen, Hydrogen Ions (H+), ADP, NADP+ Use all terms listed. Make as many connections as you can. Be sure your maps are clear.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_forward1. If ATP breakdown (hydrolysis) is inhibited, which of the following types of movement across cell membranes is also inhibited? (A) Movement of oxygen into a cell (B) Movement of water through aquaporins (C) Passage of a solute against its concentration gradient (D) Facilitated diffusion of a permeable substance 2. Which of the following questions is most relevant to understanding the Calvin cycle? (A) How does chlorophyll capture light? (B) How is ATP used in the formation of 3-carbon carbohydrates? (C) How is NADP+ reduced to NADPH? (D) How is ATP produced in chemiosmosis? OXYGEN CONCENTRATION IN THE WATER OF A LAKE Hours of Darkness 06:00 08:00 10:00 12:00 14:00 16:00 18:00 20:00 22:00 24:00 02:00 04:00 06:00 Time of Day 3. What most likely causes the trends in oxygen concentration shown in the graph above? (A) The water becomes colder at night and thus holds more oxygen. (B) Respiration in most organisms increases at night. (C) More organisms are respiring at night than during the…arrow_forward
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