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 4TY
Summary Introduction
Introduction:
Linear electron flow is the movement of electrons from PSII to PSI to NADPH, and the amount of the ATP and NADPH that is produced during this flow is nearly equal. There is more usage of ATP than NADPH during the Calvin cycle. Thus, it is a problem because plants require more ATP than NADPH.
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Students have asked these similar questions
Which 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 question
Identify the correct compound to create a chemical equation that represents Photosynthesis.
+
Drag and drop the right reactants and products of the Light Dependent and Light Independent (aka Dark)
Reactions.
Chloroplast
NADPH
NADP+
ADP
Water - H20
Calvin Cycle
Glucose - C6H1206
ATP
Light Reaction
Thylakoids
Stroma
O2
Carbon Dioxide CO2
Identify the reactants and products that are used and given off by plants and animals.
Which of the following statements is FALSE?
Water is the ultimate electron donor.
Photosystem II has chlorophylls in its reaction center that has maximum light absorption at 680 nm.
Plastoquinone has a higher reduction potential than plastocyanin.
Proton gradient is created in the light phase of photosynthesis wherein the pH in the stroma is higher than in
the lumen.
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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- Where do photosynthetic organisms get the energy needed to make sugars during the light- independent/dark reactions? They use the ATP and NADPH that are produced during the light-dependent reactions. They convert the 6-carbon sugars into 5-carbon sugars. They obtain the energy directly from the Sun. They use the ADP and carbon dioxide produced during the light-dependent reactions.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_forwardWhich of the following approaches would be the best way to detect the lack of photosystem II in some photosynthetic organisms? Determine whether they have thylakoid membranes. Determine whether they consume CO2 in the dark. Determine whether they produce O2 in the light. Determine the action spectrum for photosynthesis in these organisms.arrow_forward
- Place the following steps of the Light-Reactions of Photosynthesis in order. Production of NADPH Absorption of light Electron transport chain & Production of ATP Photosystem II Photosystem Iarrow_forwardChoose the CORRECT order of reactions that are conducted by photosystem I. P700 is activated by two photons → two Chl A0 accept two high-energy electrons → one quinone A1 is fully reduced → two electrons are passed on one 4Fe–4S cluster → two molecules of ferredoxin are reduced → ferredoxin–NADP+ reductase takes two protons from the stroma and reduces one NADP+ P680 is activated by two photons → two Chl A0 accept two high-energy electrons → two molecules of ferredoxin are reduced → ferredoxin–NADP+ reductase oxidizes one ferredoxin at a time to reduce FAD to FADH- and then to FADH2 → the proton-motive force is created P700 is activated by a photon → Chl A0 accepts two high-energy electrons → one plastoquinone QA is fully reduced → two electrons are passed on one 4Fe–4S cluster → two molecules of ferredoxin are reduced → ferredoxin–NADP+ reductase takes two protons from the stroma and reduces one FAD P700 is activated by a photon → pheophytin accepts two high-energy electrons →…arrow_forwardWhich of the following steps is responsible for oxygen gas production in photosynthesis? Excitation of a photosystem II electron Excitation of a photosystem I electron Breakdown of water to replace a photosystem II electron Breakdown of water to replace a photosystem I electron More than one answer is correctarrow_forward
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