of the claSS. 1. How do plants acquire the starting reactants of photosynthesis (CO, and H,0)? What do plants do with the products of photosynthesis (O, and carbohydrates)? 2. A plant may be using more energy to fuel life processes (cell respiration) than it is taking in through photosynthesis either because its cell respiratory rate is elevated or because photosynthetic rate is diminished. a. What is one potential reason why a plant may be forced to elevate its cell respiratory rate? b. What is one potential reason for why a plant may experience diminished photosynthetic rates? 65

of the claSS. 1. How do plants acquire the starting reactants of photosynthesis (CO, and H,0)? What do plants do with the products of photosynthesis (O, and carbohydrates)? 2. A plant may be using more energy to fuel life processes (cell respiration) than it is taking in through photosynthesis either because its cell respiratory rate is elevated or because photosynthetic rate is diminished. a. What is one potential reason why a plant may be forced to elevate its cell respiratory rate? b. What is one potential reason for why a plant may experience diminished photosynthetic rates? 65

Biology: The Dynamic Science (MindTap Course List)

4th Edition

ISBN:9781305389892

Author:Peter J. Russell, Paul E. Hertz, Beverly McMillan

Publisher:Peter J. Russell, Paul E. Hertz, Beverly McMillan

Chapter8: Photosynthesis

Section: Chapter Questions

Problem 4TYK

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A. The C4 plant performs photosynthesis more efficiently than the C3 when the CO2 concentration is 600ppm or less. Provide one reason why the rate of photosynthesis doesn’t change for the C4 plant when the CO2 concentration increases above 400 ppm. B. Discuss what is happening in the C3 plant when the CO2 levels are below 50 ppm. Provide one reason why this does NOT happen to the C4 plant.
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: Photosynthesis 1. What are the main inputs (reactants) required for overall photosynthesis? Where are they used in the individual process? 2. Why do plants require light to perform photosynthesis? What is the mechanism plans have to utilize light energy in photosynthesis? 3. Which types of plants use the C4 cycle? Which types of plants utilize the Calvin Cycle? 4. Evolution led to the formation of Rubisco that is used by C3 plants to fix CO2. Why do you think that it led to an enzyme that also binds to 02 (which causes photorespiration that isn't beneficial to the plant)? 5. Explain what is meant by the statement: "C4 plants separate C3 and C4 processes in space and CAM plants separate C3 and C4 processes in time." 404 words MacBook Pro
1. The enzyme used to catalyze the initial fixation of CO2 in C4 photosynthesis is: NADP+ reductase rubisco ATP synthase PEP carboxylase 2. Which could be used to monitor the rate of photosynthesis in a plant? oxygen production water production hydrogen production carbon dioxide production 3. Photosynthesis is an example of what type of reaction? catabolic and exergonic anabolic and exergonic catabolic and endergonic anabolic and endergonic *I do not need explanations of them just an answer choice, so dont write one, need asap*
d) In the presence of sunlight, an electrochemical gradient is generated between two of the spaces within the chloroplast. 1.Describe what happens when a photon of light energy hits a molecule of chlorophyl. 2. What is meant by the term electrochemical gradient? 3.What role does the photosynthetic electron transport chain play in the generation of the electrochemical gradient? 4. Two chemical reactions also contribute to the generation of the electrochemical gradient. What are the reactions, where do they occur, and why do these factors affect the gradient? 5. The electrochemical gradient can be utilised by ATP synthase to generate ATP - explain how the location and structure of ATP synthase enable it to perform this function. e) The light reactions of photosynthesis generate ATP and NADPH for use in the dark reactions (i.e., the Calvin cycle). Why are they needed?
1.The shorter the wavelength of visible light the Group of answer choices a, more photons it contains b, less energy absorbed by photosynthetic pigments c, reener the color d, greater the energy 2. The reason we breathe in oxygen is to assist in the production of Group of answer choices a, cell structures b, ATP c, Glucose d, Nitrogen 3. Why does a plant use the CAM or C4 pathway during photosynthesis? Group of answer choices a, To bind carbon dioxide and not use the C3 pathway in photosynthesis b, To bind Carbon dioxide to use later in the C3 pathway when carbon dioxide levels are low due to closed stomata c, Plants that use C4 and CAM do not do photosynthesis d, To use in the process of cell respiration when stomata are closed
choose letter pls 1. why is cyclic electron flow important in photosynthesis? a. generates greater amount of energy in simple but efficient pathway.b. allows the plants to conserve energy produced during photosynthesis.c. converts chemical energy from inorganic moleccules with less input of atp.d. allows the plants sensitive to light and living in low light environment to produce atp 2. which of the following does not occur during the light dependent reaction?a. photolysis of h2ob. realease of oxygenc. regeneration of co2 acceptord. phosphorylation of adp forming atp
A. Explain the role of ATP in life process. B. Complete the following table by comparing and contrasting the light-dependent and light-independent reactions of photosynthesis. You may use the link below for reference. https://youtu.be/KfvYQgT2M-k Light- independent reactions Point of Light-dependent reactions Comparison 1. Raw materials 2. Part of the chloroplasts where they occur 3. Light requirements 4. Products 15. Ву-products
a. What is photosynthesis and what is its importance to plant growth and primary productivity? b. What is the balanced equation for photosynthesis and how does it differ from cellular respiration? c. What are the key components of the light and dark reactions and how do you differentiate one from the other? d. How is photosynthesis measured? e. What are the environmental influences on photosynthesis? f. Include illustrations or figures appropriately. g. List your major references (at least five and no more than 10 references)
46. An organism that cannot produce its own food is called a photoautotroph. a true b false 47. The one thing that all photosynthetic organisms have in common is chloroplasts. a true b false 48. The organelle that is unique to eukaryotic photoautotrophs is the chromoplast. a true false 49. An electron that has gained energy from light may transfer that energy to a neighbouring electron, and then return to its ground state. a true b false 50. The structure that connects stacks of thylakoids is the grana. a true false 51. Light is a form of energy that travels in wave packets called protons. a true b false
2. Sugar is made in the chloroplast through CO2 assimilation by the Calvin cycle. This cycle involves 11 enzymes and produces carbohydrates from atmospheric CO2 using NADPH and ATP supplied by the light reactions. Chloroplast phosphoglycerate kinase (cpPGK) catalyzes the conversion of 3-phosphoglycerate to 1,3-bisphosphoglycerate using ATP (step #2). CHI-O-PO C=0 Rate of CO₂ assimilation (μmol CO₂ m² s¯¹) H-C-OH H-C-OH 6 ADP+6P, Transketolase CH,-O-PO 6 Ribulose-1,5-bisphosphate 6 ATP 40 H C=O H-C-OH CH,-O-PO 10 Glyceraldehyde-3-phosphate 30 20 6C0₂ 10 Ribose phosphate isomerase Phosphoribulokinase To cytoplasm C=O H-C-OH CH,-o-PO, 2 Glyceraldehyde-3-phosphate CH,-O-PO2 HO-C-COO C=0 H-C-OH CH,-O-PO 6 Carboxylase intermediate Ribulose bisphosphate carboxylase 1 CALVIN CYCLE H C=O H-C-OH CH,-O-PO 2 12 Glyceraldehyde-3-phosphate Sugars Glyceraldehyde-3-phosphate dehydrogenase (3) 04 * 12 P PEA 400 800 pCi (μmol mol ¹) 9 C=0 H-C-OH Phosphoglycerate kinase 2 CH,-O-PO 12 3-Phosphoglycerate…
2) Research current topics in increasing crop yields related to increasing photosynthetic efficiency. Research topics may include specific research on C3, C4, and CAM plants. What type of photosynthetic pathways do our major plant crops carry out (the major crops are soy, rice, corn, and wheat)?