Which of the following causes the formation of ATP during the light dependent reaction? A. It is caused by the electrochemical gradient created by the splitting or water molecules B. It is caused by the increase or oxygen gas in the system C. It is created when the electrons allow the attachment of an inorganic phosphate to ADP D. The photons energize the activation of the ATP synthase, thus combining an inorganic phosphate to ADP. 2. What is the purpose of splitting water in photosystem II? A. To create an electrochemical gradient in the thylakoid B. To create oxygen molecules C. To make the environment acidic D. To provide free hydrogen ions that would soon attach to inorganic phosphates in ATP synthesis

Which of the following causes the formation of ATP during the light dependent reaction? A. It is caused by the electrochemical gradient created by the splitting or water molecules B. It is caused by the increase or oxygen gas in the system C. It is created when the electrons allow the attachment of an inorganic phosphate to ADP D. The photons energize the activation of the ATP synthase, thus combining an inorganic phosphate to ADP. 2. What is the purpose of splitting water in photosystem II? A. To create an electrochemical gradient in the thylakoid B. To create oxygen molecules C. To make the environment acidic D. To provide free hydrogen ions that would soon attach to inorganic phosphates in ATP synthesis

Concepts of Biology

1st Edition

ISBN:9781938168116

Author:Samantha Fowler, Rebecca Roush, James Wise

Publisher:Samantha Fowler, Rebecca Roush, James Wise

Chapter4: How Cells Obtain Energy

Section: Chapter Questions

Problem 10RQ: Chemiosmosis involves a. the movement of electrons across the cell membrane. b. the movement of...

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1. During the light dependent reaction, the molecules within the membrane absorb light energy 2. high energy compounds light dependent portion of photosynthesis 3. an electron which is released by a process called and are produced in the in the thylakoid enters where it is energized and used to convert energy. 4. protons travel through located in the thylakoid membrane in a high energy compound. a process known as 5. The three stages of the light independent reaction are to produce and 6. The most abundant protein on earth is 7. You would need molecules of RuBp in order to create 1 molecule of glucose
1. In chloroplasts, the enzyme ATP synthase couples the synthesis of ATP to: a. the diffusion of protons. b. the reduction of NADP+. c. the excitation of chlorophyll. d. the reduction of chlorophyll e. the transfer of electrons. 2. In the two-dimensional paper chromatography technique used by Calvin and Benson, a substance that ends up in the middle of the paper means that: a. it is insoluble in one of the solvents. b. it is an impure substance. c. it is too large to migrate all the way across the paper. d. it migrates roughly half way across the paper in both solvents. e. it is a relatively large and charged molecule. In chloroplasts, an electron being passed down the electron transport chain may have originated from: photosystem I. photosystem II. NADPH. both a and b. a, b, and c If we are able to follow a single electron that has just been ejected from the reactive center of photosystem II, which of the following is a feasible pathway…
1. Choose all the correct answers. Enzyme catalyzing this reaction: COO CO0 но C-H + NAD* CH2 + NADH + H* CH2 лвенный тет CoO COO L-Malate Oxaloacetate A. Belongs to the class of transferases. B. Belongs to the class of oxidoreductases. C. Is a simple enzyme. D. Is a holoenzyme.
a. Porphyrin ring needs for b. iron-sulfur protein that transfers electrons to NADP c. herbicides kill weeds by blocking 1.dark reaction 2.PSII 3.ferredoxin d. Rubisco belongs to 4.Light reaction iron-sulfur protein that transfers electrons to NADP herbicides kill weeds by blocking Porphyrin ring Rubisco
9. How many molecules of ATP can be produced from one molecule of FADH2? a. 1.5 O b. 3 )с. 3.5 od. 5
1. Which of the following does NOT happen during the light-dependent reactions of photosynthesis?A. ATP is producedB. Oxygen is producedC. NADPH is producedD. Glucose is produced 2. The overall source of energy for photosynthesis is:A. energy released when water is split, and oxygen is producedB. energy from NADPHC. light energy from the sun D. energy from ATP 3. John Dela Cruz grew algae in the presence of a poison that stops the lightindependent reactions of photosynthesis. As a result, which molecules will the light-dependent reactions stop producing?A. ADP and NADP+B. ADP and NADPHC. ATP and NADP+D. ATP and NADPH
1. Why is water split by PSII in the light reactions? 2. How is ATP synthesis powered in the light reactions? How does this compare to the oxidative phosphorylation of Cellular Respiration?
Photo-oxidation is: A. photorespiration B. photolysis C. light and oxygen induced breakdown D. All of the above
The picture below shows a preparation of isolated thylakoid membranes suspended in a buffer at pH 7. The preparation is in complete darkness. Which of the following is required for the thylakoids to generate ATP? A. Isolated thylakoid membranes cannot synthesize ATP. B. Incubation in the light plus ADP, Pi and NADP+ C. Incubation in the light plus ADP and Pi. D. Addition of ADP and Pi to the buffer.
18. Figure 6 shows the ATP cycle. Name the enzyme of S and R that mediated the reactions. * H,0 АТР ADP +Pi Figure 6 A. S: ATP synthetase; R: ATPase O B. S: ATPase; R: ATP synthetase C. S. ATP synase; R: ATPhase D. S ADP synthetase; R: ADPase
Part 2: Matching Match each compound to a step that of the Light-Dependent Reaction. f. electron acceptor g. electron carrier h. chlorophyll II. i. NADPH reductase j. b,- f complex a. P700 b. Р680 C. P680 d. ATP synthase e. Photosystem I | 51. Light photons excite electrons from this part of the Reaction Centre. 52. Also known as Photosystem II. 53. Reduced by electrons removed from H,O through photolysis. 54. Uses energy released by redox reaction to pump H' ions into the thylakoid space. 55. Photons excite electrons that leave and are then replaced by electrons used to pump H° ions into thylakoid space. 56. This complex has the Reaction Centre used for cyclic photophosphorylation. 57. Protein that is embedded in the thylakoid membrane. 58. The enzyme that helps remove electrons from the thylakoid. 59. The enzyme that acts to form ATP with chemiosmosis.
17. Identify the process of generating ATP during glycolysis. * O A. Substrate Level Phosphorylation O B. Oxidative Phosphorylation C. Photo-Phosphorylation ) D. RedOx Reactions 18. Figure 6 shows the ATP cycle. Name the enzyme of S and R that mec