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From the choices which is the correct answer when it comes to the Photolysis of water? Is it involved in what?
a. fixing electron gap in PSII and creating
b. creating electrochemical gradient only
c. filling electron gap in PSI and creating electrochemical gradient
d. filling electron gap in PSI and PSII
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- DARK REACTIONS 6 CO₂ Chemical Energy Enzymes a. Procedures -> C6H12O6 + 6 H₂O The activities in this laboratory exercise include: A. Examination of the cell structures of plants which are involved in photosynthesis and the transport of reactants and products (microscope). B. Separation of the various kinds of plant pigments (paper chromatography). C. Selective absorption of "visible" light by plant pigments (spectrophotometer and spectroscope). D. Effects of light quality on the light reactions of photosynthesis (shown on video). E. Identification of carbon dioxide as the substrate for the dark reactions (phenol red). F. Location of stored sugars (starch) in variegated leaves (leaf clearing demonstration). II. INTRODUCTION A. EXAMINATION OF PLANT CELL STRUCTURES 1. Plant cells involved with photosynthesis Plant cells, active in the process of photosynthesis, contain green spherical cytoplasmic organelles known as chloroplasts. These structures house both the pigments active in light…At your work station, you have a spectrophotometer set at 600 nm to measure DCIP absorbance and four (4) test tubes containing different solutions. One of the test tubes is labelled “0” to blank/zero the spectrophotometer. The other three (3) test tubes contain a reaction mixture from a Hill reaction experiment using isolated chloroplasts and DCIP as an electron acceptor. DCIP is present in the oxidized state and exhibits a blue color with an absorbance at 600 nm. Upon receiving the electrons, DCIP is reduced to form DCIP-H2 that is colorless. These three (3) tubes, labelled “A”, “B”, and “C” were exposed to different light conditions during the Hill reaction. The Light conditions were random, including No light, Red light, and Green light. Please note that chlorophyll preferentially absorbs the light with wavelength of 660 nm (red) when compared to that of 520 nm (green). Your mission is to determine which Tube came from which experimental light condition. Tube: Tube…can you explain what is happening in the attached graph? Figure 2: Lineweaver-Burke plot of ALP Kinetic parameters.
- 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 RubiscoWhy do the reaction centers have different pigments rather than only the chlorophyls? quantitatively increasing the absorption photons narrowing coverage of the visible spectrum light increasing coverage of the visible spectrum light arranging light-harvesting complexe compensating for the high density of chlorophyllOxygen has the greatest electron atracting potential in the electron transport chain?. Group of answer choices True False
- How are light reactions related to dark reactions? Question 1 options: Light reactions produce ADP and NADP+ and the dark reactions use ADP and NADP+ Light reactions produce ATP and NADPH and the dark reactions use ATP and NADPH Dark reactions produce ADP and NADP+ and the light reactions use ADP and NADP+ Dark reactions produce ATP and NADPH and the light rDefine Linear Electron Flow. Explain each step of Linear Electron Flow (Electron Transport Chain) in your own Words. Do not draw the diagram. Please do not write the answer on a piece of paper, type it on the keyboard.ATP is produced during the light reactions via OA. CO₂ fixation. OB. reduction of water. OC. glycolysis. O D. noncyclic electron flow from photosystem I. O E. chemiosmosis.
- In a photosynthetic investigation, a student measured the following pH of the stroma and the inner thylakoid compartments of spinach leaf cells at the conclusion of the experiment. Source of Fluid pH (mean) Standard Error of Mean (SEM) Stroma 8.2 0.75 Inner compartment of thylakoid 5.6 0.35 Explain the reason for the differences in pH between the stroma and the thylakoid lumen.For each of the statements below, indicate whether they are true or false and then in detail explain why the false statements are incorrect, making reference to the relevant cell processes and/or molecules. A. In cellular respiration the ETC transfers electrons via redox reactions whereas in photosynthesis the ETC transfers electrons using light. B. In cellular respiration the ETC creates a proton gradient with the higher concentration on the outer side of the inner membrane whereas in photosynthesis the ETC creates a proton gradient with the higher concentration on the inner side of the thylakoid membrane. C. In cellular respiration the ETC gradient is used to power ATP production by oxidative phosphorylation whereas in photosynthesis the ETC gradient is used to power ATP production by substrate level phosphorylation.In a photosynthetic investigation, a student measured the following pH of the stroma and the inner thylakoid compartments of spinach leaf cells at the conclusion of the experiment. Source of Fluid pH (mean) Standard Error of Mean (SEM) Stroma 8.2 0.75 Inner compartment of thylakoid 5.6 0.35 Describe the stages of photosynthesis. Explain the need for a constant supply of inorganic carbon dioxide.