EBK INQUIRY INTO LIFE: RELEVANCY UPDATE
15th Edition
ISBN: 9781260178012
Author: Mader
Publisher: MCGRAW HILL BOOK COMPANY
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Textbook Question
Chapter 8.2, Problem 4CYP
Describe why the H+ gradient across a thylakoid membrane is referred to as a storage of energy.
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Describe why the H+ gradient across a thylakoid membraneis referred to as a storage of energy.
Under 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.
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.
Chapter 8 Solutions
EBK INQUIRY INTO LIFE: RELEVANCY UPDATE
Ch. 8.1 - Compare and contrast autotrophs and heterotrophs.Ch. 8.1 - Prob. 2LOCh. 8.1 - Prob. 3LOCh. 8.1 - Prob. 4LOCh. 8.1 - Prob. 1CYPCh. 8.1 - Prob. 2CYPCh. 8.1 - Prob. 3CYPCh. 8.1 - Prob. 4CYPCh. 8.1 - Prob. 1ACh. 8.1 - Prob. 2A
Ch. 8.1 - Prob. 3ACh. 8.2 - Prob. 1LOCh. 8.2 - Prob. 2LOCh. 8.2 - Prob. 3LOCh. 8.2 - Prob. 1CYPCh. 8.2 - Prob. 2CYPCh. 8.2 - Prob. 3CYPCh. 8.2 - Describe why the H+ gradient across a thylakoid...Ch. 8.2 - Prob. 4ACh. 8.2 - Prob. 5ACh. 8.2 - Prob. 6ACh. 8.3 - Describe the three phases of the Calvin cycle.Ch. 8.3 - Prob. 2LOCh. 8.3 - Prob. 1QTCCh. 8.3 - Prob. 2QTCCh. 8.3 - Prob. 1CYPCh. 8.3 - Prob. 2CYPCh. 8.3 - Prob. 3CYPCh. 8.3 - Prob. 7ACh. 8.3 - Prob. 8ACh. 8.4 - Contrast C3, C4, and CAM photosynthesis.
Ch. 8.4 - Prob. 2LOCh. 8.4 - Prob. 1QTCCh. 8.4 - Prob. 2QTCCh. 8.4 - Prob. 1CYPCh. 8.4 - Prob. 2CYPCh. 8.4 - Prob. 9ACh. 8.4 - Prob. 10ACh. 8.5 - Prob. 1LOCh. 8.5 - Prob. 2LOCh. 8.5 - Explain the similarities, and difference, between...Ch. 8.5 - Prob. 2CYPCh. 8.5 - Prob. 11ACh. 8.5 - Prob. 12ACh. 8 - Prob. S3.3BYBCh. 8 - Figure 6.1 How does energy flow in biological...Ch. 8 - Prob. S6.3BYBCh. 8 - Prob. 1CSCh. 8 - Prob. 2CSCh. 8 - Prob. 1TCCh. 8 - Prob. 2TCCh. 8 - Prob. 3TC
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- Draw a simple sketch illustrating a thylakoid membrane that is actively involved in chemiosmosis and label the two compartments it separates. Add the ATP synthase complex, indicate the proton gradient, and specify inwhich compartment ATP is synthesized.arrow_forwardDraw a thylakoid disc. Label the following components: Thylakoid membrane Thylakoid space (lumen) PS1 PS2 Ferredoxin NADP Reductase Stroma ATP Synthasearrow_forwardwhat is the protein complex embedded in the thylakoid membrane that allows protons to flow down their concentration gradient from thylakoid lumen to the stroma? also, the free energy from the flow of protons is used to power which process?arrow_forward
- State the overall equation for cellular respiration. --Explain where each “input” comes from. --Explain where each “output” goes.arrow_forwardInside the thylakoid is a fluid-filled space calledarrow_forwardDescribe the organization of the thylakoid and how thisorganization is critical to the production of ATP duringphotosynthesis.arrow_forward
- Assume a pH gradient of 4.0 units across a thylakoid membrane, with the lumen more acidic than the stroma.What is the standard free energy change per mol O2 produced? How does this compare to the energy required to drive the synthesis of ATP?arrow_forwardThe warmth of hot flowers attracts pollinators and helps broadcast the flowers’ (often foul) scent. Corpse flower stalks can reach 98°F, as warm as our bodies. The heat and foul odor both occur in pulses produced by the central stalk. How do these flowers get so hot? Amorphophallus and other heatproducing flowers have evolved mechanisms that disconnect cellular respiration from ATP synthesis. In most cells, cellular respiration uses about 40% of the energy in glucose to synthesize ATP, with the rest given off as heat (see Chapter 8). Hot flowers, on the other hand, synthesize very little ATP; instead, almost all of the energy in glucose is released as heat, causing the flower to warm up. Besides the promise of carrion, what other features have flowers evolved that attract animal pollinators?arrow_forwardDraw a graph of the functional responses of the photosynthetic rate of a C4 and a CAM plant (2 lines) over the range of PAR.arrow_forward
- W hen a culture of Chlamydomonas is exposed to HIGH intensity light, the cells will display negative phototaxis and move away from the light. Which of the following could act as a cellular signal triggering movement away from the light? A. Low levels of P700+ relative to P700 in the chloroplast. B. High levels of G3P in the cytosol. C. High levels of NAD+ relative to NADH in mitochondria. D. Low levels of ATP relative to ADP in the cytosol.arrow_forwardExplain the chemiosmotic mechanism of ATP generation. How does oxidative phosporylation compare with substrate level phosphorylation found in glycolic and the Krebs cycle?arrow_forwardEven though C4 plants require more ATP per CO₂ fixed, at higher temperatures, they are more efficient than C3 plants. Which of the following explains the effectiveness of C4 plants? contains a mutant form of Rubisco that does not bind to oxygen oxygen is prevented from entering the bundle-sheath cells where Rubisco is found Oduring the night, carbon dioxide is stored as malate so that stomata do not need to open during the day O photorespiration in C4 plants produces energy while in C3 plants, energy is consumedarrow_forward
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The Cell Membrane; Author: The Organic Chemistry Tutor;https://www.youtube.com/watch?v=AsffT7XIXbA;License: Standard youtube license