DRAW IT The following diagram represents an experiment with isolated thylakoids. The thylakoids were first made acidic by soaking them in a solution at pH 4. After the thylakoid space reached pH 4, the thylakoids were transferred to a basic solution at pH 8. The thylakoids then made ATP in the dark. (See Concept 2.51&1 to review pH.)
Draw an enlargement of part of the thylakoid membrane in the beaker with the solution at pH 8. Draw ATP synthase. Label the areas of high H· concentration and low W concentration. Show the direction protons flow through the enzyme, and show the reaction where ATP is synthesized. Would ATP end up in the thylakoid or outside of it? Explain why the thylakoids in the experiment were able to make ATP in the dark.
Want to see the full answer?
Check out a sample textbook solutionChapter 8 Solutions
Campbell Biology In Focus, Loose-leaf Edition (3rd Edition)
Additional Science Textbook Solutions
Genetics: Analysis and Principles
Evolutionary Analysis (5th Edition)
Laboratory Experiments in Microbiology (11th Edition)
Becker's World of the Cell (9th Edition)
Principles of Anatomy and Physiology
- what is the mechanism driving the bromothymol blue solution color change? This is a quesiton from my bio lab as how cellular respiration occurs in germinated beans, dry beans, or no beans at all. Anyone know?arrow_forwardA microbe lives solely on acetate. It has an Electron Transport Chain driven by oxygen that has two hydrogen pumps and both NADH and FADH deliver their hydrogens (and electrons) to the first pump hence each generates 2 ATP. How many ATP are generated per acetate molecule?arrow_forwardA drug forms a channel in the thylakoid membrane. Given this scenario, which of the following statements are true? O a. A large portion of the drug must be non-polar O b. Electron transport will stop C Protons will move into the stroma O d. The membrane protein behaves as an active transporterarrow_forward
- Thylakoids were isolated from chloroplasts and incubated in the dark in an acidic solution (pH 4) to equilibrate the pH. After 30 minutes, the thylakoids were transferred to a basic solution (pH 8) and kept in the dark. Will this system produce ATP? Explain. Will this system produce G3P? Explain.arrow_forwardAssume 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_forwardDraw Complete electron pushing arrow mechanism of psilocybin synthesis and explanation of all steps I need all the drawing of electron pushing not the explaination I just need electron pushing arrow mechanism for the synthesis of psilocybinarrow_forward
- 3 Diagram A below illustrates schematically a classic experiment designed to test the chemi- osmotic hypothesis. Phospholipid vesicles were made to contain beef heart mitochondrial ATP syn- thase and bacteriorhodopsin, a light driven proton pump isolated from Halobacterium holobium. Under light illumination, proton translocation by bacteriorhodopsin results in ATP synthesis when ADP and inorganic phosphate (Pi) are added to the suspension of vesicles. Diagram B shows a plot of the rate of ATP synthesis as a function of the proton gradient ApH. Bacteriorhodopsin in synthetic vesicle 100F A outside inside 5아 Fo F1 0.3 0.6 0.9 1.2 A pH (a) how this differs from its orientation in mitochondria. Given the orientation of the components of ATP synthase complex in diagram A, describe (b) cavity of the vesicle become the region of low proton concentration or the region of high proton con- centration? Explain your reasoning. Under light illumination to activate bacteriorhodopsin to drive ATP…arrow_forwardThree plants grow side by side in a pond. Glucose and starch are measured for each and shown in relative units below, along with the pH of the vacuole at dawn and at noon. Plant Glucose Starch Vacuolar pH, dawn Vacuolar pH, noon A 100 50 1 4 B 100 10 4 4 C 1,000 2 4 4 Part A:Explain what kind of photosynthesis is being done by each plant with some details about how each works. Justify your answer. Part B:Decipher which plant is biochemically defective after the light-independent reactions and explain how you deciphered this.arrow_forwardWhat is right about oxydative phosphorylation: 1. Oxidation FADH2 releases more energy than oxidation of NADH 2. Oxydative phosphorylation is the only way to produce ATP 3. Oxydative phosphorylation happens at both aerobe and anaerobe enviorment 4. Oxydative phosphorylation uses electron transport chain mitochondria 5. None above is rightarrow_forward
- Consider the following structure. CO₂CH2CH3 CO₂CH2CH3 This substance could be produced by the reaction of the following diene and dienophile. diene + dienophile H CO,CH,CH3 སངས་ CH3CH₂O₂C True Falsearrow_forwardQ1/What does it mean periplasmic space? Q2/ what does it mean phsphoenolpyruvate? Q3/what does it mean mambren energies? Q4/what does it mean activation energy with enzyme?arrow_forwardplace the following lists into the most appropriate pairs and explain how they are correct I chose the reduction of ferredoxin for the first one i chose O2 generation for the second i chose electron transport chain for the third I got these three wrong so i would like to know where i went wrong Antennae pigment molecules thylakoid membrane photosystem 1 Answer options: 1. absorption of light 2. reduction of ferredoxin 3. electron transport chainarrow_forward
- Concepts of BiologyBiologyISBN:9781938168116Author:Samantha Fowler, Rebecca Roush, James WisePublisher:OpenStax College