This is a leaf from Elodea, an aquatic plant. The arrows are pointing out chloroplasts. The field of view diameter is 75 µm. What is the approximate length of one chloroplast?
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- The following are photomicrographs of T. spathacea leaf cells in 0.01 M NaCl and 0.30 M NaCl solutions. Label the cell wall, vacuole, and tonoplasts in each photomicrograph directly and describe these in terms of their shape and color. Also, does the anthocyanin moved out of the vacuole?What happens to the cells if they are placed in a hypotonic solution? In a hypertonic? What causes the cells change in color?In a classic experiment in photosynthesis performed in 1883 by the German botanist Thomas Engelmann, he surrounded a filament of algae with oxygen-requiring bacteria. He then exposed the algal strand to the visible-light spectrum along its length. In which wavelengths of light along the algal strand would you expect the bacteria to cluster. Explain.You recently join a lab where professor is looking for photosystem of plants. He told you to isolate chloroplast and look for the photosystem II. Please select the correct sequence of events you are going to perform. options: Homogenize leaves à differential centrifugation à Fractional Solubilization à Affinity purification Homogenize leaves à Fractional Solubilization à differential centrifugation à Affinity purification Differential centrifugation à Homogenize leaves à Fractional Solubilization à Affinity purification Affinity purification à differential centrifugation à Fractional Solubilization à Homogenize leaves
- FRET is a technique that measures the transference of energy between a donor and an acceptor fluorophore. What basic properties in terms of their fluorescence these fluorophores must have to allow this energy transfer?Solar-induced fluorescence can be used to infer net photosynthesis. This is because this solar-induced fluorescence is able to measure the light that is used by the chlorophyll-a pigment (650-850nm). There is a linear relationship between this solar-induced fluorescence and the gross primary production of a plant. How does measuring chlorophyll-a pigment with solar-induced fluorescence help us infer net photosynthesis?The image under compound microscope of the letter (a) is O a. Inverted right-left, left-right and upside down O b. None of the other choices is valid O c. Not inverted at all, inversion is ONLY for (e) O d. Inverted only upside down The former name of "blue green algae" designates these photosynthetic bacteria that contain chlorophyll and that are able to perform photosynthesis O a. False O b. True
- Phycobiliproteins are complex proteins in cyanobacteria that absorb light energy. There are three different kinds of phycobiliprotein molecules used to pass light to chlorophyll: phycoerythrin is responsible for capturing green light, phycocyanin is responsible for capturing orange-red light, and allophycocyanin is responsible for capturing red light. Since light can only penetrate to certain depths in oceans, phycobiliproteins capture the light available and pass it through various pathways of phycobiliproteins until the emitted light is red, which is absorbed by chlorophyll. Use the figure below to answer the following questions. 7.5m UV 15.0m 22.5m 30.0m 37.5m Blue Green Red © Tomemorris 2020 Creative Commons Attribution-Share Alike 4.0 International license. IR 25ft 50ft 75ft 100ft 125ft a. Explain the relationship between chlorophyll absorption and wavelength. b. Justify the claim that photosynthetic organisms that live more than 75 feet below the surface of the ocean need…Phycobiliproteins are complex proteins in cyanobacteria that absorb light energy. There are three different kinds of phycobiliprotein molecules used to pass light to chlorophyll: phycoerythrin is responsible for capturing green light, phycocyanin is responsible for capturing orange-red light, and allophycocyanin is responsible for capturing red light.Since light can only penetrate to certain depths in oceans, phycobiliproteins capture the light available and pass it through various pathways of phycobiliproteins until the emitted light is red, which is absorbed by chlorophyll. Use the figure below to answer the following questions. (View image attached) 1. Justify the claim that photosynthetic organisms that live more than 75 feet below the surface of the ocean need phycoerythrin to survive. Provide reasoning that explains this claim.Would the concentration of chloroplasts be the same if they were isolated from a different part of the plant? Why or why not?
- visit: https://www.youtube.com/watch?v=EMNFZnDt75c Attempt to identify the single cup-shaped chloroplast containing the eyespot for phototaxis (phototaxis: moving toward or away from light). This will be a different color than the rest of the cell. What color is it?An experiment was done to determine how color of light and distance affects photosynthetic activity of the pond weed. Pond weed was placed in a test tube containing a solution of sodium hydrogen carbonate, and had its end cut; light was placed 50 cm away and four colors were tested (clear, red, blue, and green). After placing the light, the pondweed was given a certain amount of time to adjust before counting the bubbles, bubbles were counted for 1, 3, and 5 minutes. Only the bubbles that came out of the cut end was counted to represent the rate of photosynthesis. Below is the tabulated results. What are the possible factors or errors that could have affected clear/white light to have lower photosynthetic activity? In theory this should have the highest rate.Phycobiliproteins are complex proteins in cyanobacteria that absorb light energy. There are three kinds of phycobiliprotein molecules used to pass light to chlorophyll: phycoerythrin-responsible for capturing green light, phycocyanin-responsible for capturing orange-red light, and allophycocyanin-responsible for capturing red light. Since light can only penetrate to certain depths in oceans, phycobiliproteins capture the light available and pass it through various pathways of phycobiliproteins until the emitted light is red, which is absorbed by chlorophyll. Use the figure below to answer the following questions. 7.5m UV 15.0m 22.5m 30.0m. 37.5m Blue Green Red O Tomemorris 2020 Creative Commons Attribution-Share Alike 4.0 International license. IR 25ft 50ft 75ft 100ft 125ft a. Explain the relationship between chlorophyll absorption and wavelength. b. In addition to the pigments commonly associated with photosynthesis, a certain photosynthetic species contains two additional pigment…