Study Guide for Campbell Biology
11th Edition
ISBN: 9780134443775
Author: Lisa A. Urry, Michael L. Cain, Steven A. Wasserman, Peter V. Minorsky, Jane B. Reece, Martha R. Taylor, Michael A. Pollock
Publisher: PEARSON
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Textbook Question
Chapter 10, Problem 2SYK
Create a concept map to confirm your understanding of the chemiosmotic synthesis of ATP in photophosphorylation.
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Identify the chemical basis for ApH and AY across the chloroplast
thylakoid membrane by dragging the descriptions to their targets. Be sure
to notice that the upper arrow iindicates ApH and the lower arrow
indicates ΔΨ.
ATP synthase
complex
H+
N
ADP
+ P₁
Light
energy
ATP
H*N
Photosystem I/II-
Chloroplast
N side
Aus
PN
ApH
T
+
Thylakoid
membrane
HTp
H+p
Lumen
Stroma
P side
Proton
circuit
A
B
High H
concentration
Low positive
charge
High positive
charge
Low H+
concentration
Within the image, identify the types of proton translocation by dragging
each label to its target.
O
XH₂
2H+ + Z
2 H*
ZH₂
O
XH₂
Z
2H+
ZH₂ 2H+
C
A
B
Proton pump
Redox loop
Provide a simplified schematic presentation of (non-cyclic) photophosphorylation. Clearly indicate the location and direction of electron and proton flow as well as organelle compartments. (You can also draw the Z-scheme but then you have to include ADP phosphorylation).
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.
Chapter 10 Solutions
Study Guide for Campbell Biology
Ch. 10 - Prob. 1IQCh. 10 - Fill in the blanks in the following overview of...Ch. 10 - An action spectrum shows the relative rates of...Ch. 10 - Describe the components of a photosystem.Ch. 10 - Identify the components of linear electron flow in...Ch. 10 - a. On the diagram in Interactive Question 10.5,...Ch. 10 - a. In the light, the proton gradient across the...Ch. 10 - Label the three phases (a, b, and c) and key...Ch. 10 - What are two possible explanations for the...Ch. 10 - a. Where does the Calvin cycle take place in C4...
Ch. 10 - You have already filled in the blanks in several...Ch. 10 - Create a concept map to confirm your understanding...Ch. 10 - Which of the following processes or structures is...Ch. 10 - A plant is growing under bright lights in a sealed...Ch. 10 - The immediate product of the Calvin cycle is...Ch. 10 - A spectrophotometer can be used to measure the a....Ch. 10 - Accessory pigments within chloroplasts are...Ch. 10 - The following diagram is an absorption spectrum...Ch. 10 - Linear electron flow along with chemiosmosis in...Ch. 10 - The chlorophyll known as P680+ has its electron...Ch. 10 - The enzyme rubisco a. uses NADPH and ATP to make...Ch. 10 - In photosynthesis, the splitting of water a....Ch. 10 - The reactions of the Calvin cycle occur in the a....Ch. 10 - A difference between electron transport in...Ch. 10 - How does cyclic electron flow differ from linear...Ch. 10 - Prob. 14TYKCh. 10 - Prob. 15TYKCh. 10 - Prob. 16TYKCh. 10 - RuBP carboxylase-oxygenase is the enzyme that a....Ch. 10 - Prob. 18TYKCh. 10 - CAM plants avoid photorespiration by a. keeping...Ch. 10 - Prob. 20TYKCh. 10 - Prob. 21TYKCh. 10 - Prob. 22TYKCh. 10 - Prob. 23TYKCh. 10 - a. respiration b. photosynthesis c. both...Ch. 10 - a. respiration b. photosynthesis c. both...Ch. 10 - a. respiration b. photosynthesis c. both...
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- (c) Compare the differences between oxidative phosphorylation and photophosphorylation by redrawing (if necessary) and completing the table given below: Table 1: Comparison of oxidative phosphorylation and photophosphorylation Oxidative phosphorylation Photophosphorylation Organelle Source of electrons Final electron acceptor Source of energy Role of ATParrow_forwardUnder conditions of very high light intensity, excess absorbed solar energy is dissipated by the action of photoprotective proteins in the thylakoid membrane. Explain why it is advantageous for these proteins to be activated by buildup of the proton gradient across the membrane.arrow_forwardIn detail describe cyclic and non cyclic photophosphorylation, include all the stepsarrow_forward
- Transport across the inner membrane of chloroplasts depends on the proton gradient established during ATP synthesis, similar to mitochondria. Can someone explain why this statement is false?arrow_forwardWhich of the following statements about the light reactions of photosynthesis are correct? 1. Absorption of light does one thing: it makes chlorophyll easier to oxidize. 2. In PSII, the rate of damage to the D1 protein can never exceeds the rate of repair. 3. Electron transport is spontaneous (exergonic) as electrons move from P680* to P700+. 4. Compared to anoxygenic photosynthesis, in oxygenic photosynthesis less light needs to be absorbed to reduce NADP+. A. 1,2 and 3 B. 1 and 3 C. 2 and 4 D. 4 only E. All of 1,2,3 and 4 are correctarrow_forwardChoose 2 of the following terms: Z protein / ATP synthase / Photosystem II. What is the specific role of each of the following? Describe what and how the protein does its job. As well, explain the importance of each in the overall process of photosynthesis.arrow_forward
- 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?arrow_forwardExplain in detail of the stages of photosynthesis without explaining all the reactions of each pathways, but state the key steps of each pathway. Mention the location where each pathway happens in the plant and lastly make a table of the products formed at the end of the stage (ATPs, NADPHs, and water). Discuss about the oxidation-reduction of various molecules that are a part of these pathways.arrow_forwardATP energy molecules are synthesized during the oxidative phosphorylation of cellular respiration in mitochondria and the light reaction of photosynthesis in chloroplasts. Using the diagram below as a guide, compare and contrast the mechanisms of ATP synthesis in the two processes.arrow_forward
- Draw a basic drawing of a thylakoid membrane that is actively engaged in chemiosmosis and mark the two compartments it divides. Add the ATP synthase complex, indicate the proton gradient, and define which compartment ATP is generated in.arrow_forwardCondition: A transmembrane (or integral membrane) protein that acts as a H+ channel has been added to the thylakoid membrane. What impact will thishave to photosynthesis? Explain why. (Specific values are not required, just an indication of overall effect and reasons why.)arrow_forwardA key experiment that helped put doubts to rest regarding the chemiosomotic theory used an artificial vesicle, a light activated proton pump, and ATP synthase. Which of the following are true about this experiment? (select all that apply) Group of answer choices The inside of the vesicle is more negatively charged when the light is turned on ATP production would decrease if the proton pump was not included in the experiment Adding UCP1 into the experiment would increase ATP production ATP production increases when the light is turned on The pH inside the vesicle decreases when the light is turned on The final stage of the electron transport chain is the transfer of the electrons to ATP synthase. Group of answer choices True False Complex I can accept electrons from NADH using binding sites on both the matrix and intermembrane space sides of the inner mitochondrial membrane Group of answer choices True False Different iron-sulfur clusters can have different…arrow_forward
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