For the Photosynthesis procedure, you will be detecting if photosynthesis occurs in Elodea plants exposed to light vs kept in the dark. Do you think the Elodia kept in the dark will be able to undergo the light reaction of photosynthesis? How will you be able to tell if the elodea has or has not undergone photosynthesis?
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For the Photosynthesis procedure, you will be detecting if photosynthesis occurs in Elodea plants exposed to light vs kept in the dark. Do you think the Elodia kept in the dark will be able to undergo the light reaction of photosynthesis? How will you be able to tell if the elodea has or has not undergone photosynthesis?
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- Which of the following statements about the light reactions of photosynthesis are correct? 1. Absorption of light does one thing: it makes chlorophyll easier to oxidize. 2. In PSII, the rate of damage to the D1 protein can never exceeds the rate of repair. 3. Electron transport is spontaneous (exergonic) as electrons move from P680* to P700+. 4. Compared to anoxygenic photosynthesis, in oxygenic photosynthesis less light needs to be absorbed to reduce NADP+. A. 1,2 and 3 B. 1 and 3 C. 2 and 4 D. 4 only E. All of 1,2,3 and 4 are correctIn hot, dry climates, plants have evolved mechanisms to avoid photorespiration. Which of the following is FALSE Select an answer and submit. For keyboard navigation, use the up/down arrow keys to select an answer. a b с d e C3 plants have no mechanism to avoid photorespiration C4 plants reduce photorespiration by separating the light reaction in the mesophyll cells from the light- independent reaction in the bundle-sheath cells CAM plants minimize photorespiration by collecting and storing CO2 at night and keeping their stomata closed during the day C4 plants include corn, sugarcane, and many grasses CAM plants can undergo photophosphorylation in the absence of sunlight Open in ReadirA group of scientists wants to test the effect of different wavelengths of light on plant photosynthesis. They have 3 treatment groups: red light, green light, and no light. They choose red light because chlorophyll has been shown to absorb red light. They choose green light because chlorophyll has been shown to reflect green light. They choose no light as a negative control to examine the rate of photosynthesis in the absence of light. To measure photosynthetic rate, the scientists use sensors to measure oxygen production of plants exposed to the different light treatments. Choose the best scientific hypothesis: O Photosynthesis is a critical process for plants, and it is of great importance that we understand how it is impacted by different wavelengths of light. O If rate of oxygen production is higher under red light than it is under green light or no light, it proves that red light has the largest effect on photosynthesis. O Because chlorophyll absorbs red light, rate of oxygen…
- What is the overall outcome of the light reactions in photosynthesis? NADPH and ATP molecules are produced during the light reactions and are used to power the light independent reactions. NADPH and ATP molecules are produced during the light reactions, which are used to power the light dependent reactions. Sugar and ATP are produced during the light reactions, which are used to power the light independent reactions. Carbon dioxide and NADPH are produced during the light reactions, which are used to power the light dependent reactions.In hot, dry climates, plants have evolved mechanisms to avoid photorespiration. Which of the following is FALSE Select an answer and submit. For keyboard navigation, use the up/down arrow keys to select an answer. a b с d C3 plants have no mechanism to avoid photorespiration C4 plants reduce photorespiration by separating the light reaction in the mesophyll cells from the light- independent reaction in the bundle-sheath cells CAM plants minimize photorespiration by collecting and storing CO2 at night and keeping their stomata closed during the day C4 plants include corn, sugarcane, and many grasses CAM plants can undergo photophosphorylation in the absence of sunlight 7 Open in ReadinDiagram 41 The Light Reactions of Photosynthesis STROMA Poteyte Potayate mples HAD Light HLARO ACE (high ir Carto Thylakold membrane ATP ynthase STROMA ow N concentration) ADP Diagram 4 shows a single thylakoid membrane taken from a chloroplast inside of a leaf cell. The events of the light dependent cycle that take place along the thylakoid membrane are shown. Identify an energy transfer that takes place n Diagram 4. Light energy is directly transferred into the chemical bonds of sugar. O Light energy is directly transferred into the chemical bonds of ATP The energy of the bonds of water are transferred into the chemical bonds of ATP. The energy from an excited electron is transferred into the chemical bonds of NADPH.
- If you could replace all of the plant ATP synthase with ATP synthase enzymes from animal cells, oriented such that the Fo complex was in the thylakoid membrane with the open channel facing the thylakoid space, and the F1 complex was present in the stroma, how would this affect the ability of photosystem II to generate ATP? Assume that the animal cell ATP synthase functions normally in the chloroplast after replacement.Which of the following scenarios happens during the light-dependent reaction of photosynthesis? Oxygen gas is produced in the thylakoid lumen by the oxidation of water by photosystem I. Ferrodoxin and NADP+ reductase participates in the reduction of NADP+ to NADPH. Carbon dioxide enters the plants via stomata. Rubisco attaches three molecules of ribulose bisphosphate (RuBP) to one molecule of carbon dioxide.What are the two places where light energy is required in the light reaction of photosynthesis? Why must energy be supplied at precisely these points?
- For most plants, two distinct photosystems (Photosystem I and Photosystem II) work together in series during photosynthesis. These photosystems are complexes of proteins and pigment molecules. Statement 1: Photosystem I has an absorption maximum of 680 nm, whereas Photosystem II has an absorption maximum of 700 nm. Statement 2: The special pair of chlorophyll a molecules in the reaction center of photosystem I is designated as P700, whereas the special pair of chlorophyll a molecules in the reaction center of photosystem II is designated as P680. Statement 1 is true. Statement 2 is false. Statement 1 is false. Statement 2 is true. Both statements are true. Both statements are false.using a 14CO2 fixation assimilation method,a plant is found to be fixing carbon at a rate of 140mgh-1 .dm-2 leaf area in the sunlight. In darkness the same plant is losing 30mgh-1.dm-2 . Calculate the photosynthetic capacity of the plant and state with reasons to which photosynthetic type the plant belongs10. Observe the graph on the right. If you had a hypothetical plant that only had a hypothetical photopigment with an absorption maximum at 585, which color light would produce the highest rate of photosynthesis? ltra Violet Blue 456-492 nm Green 492677 nm Yellow Orange 597-620 nm Red intra vielet red 400-455 nm 677-697 nm 620-700 nm nm 400 500 600 700 short wtength Ieng vetength high fmuency lawhumcy