usually found in spinach leaves: Carotene (yellow)‚ Phaeophytin (yellow-grey)‚ Xanthophyll (yellow-brown)‚ Chlorophyll a (blue-green)‚ Chlorophyll b(green). Photosynthetic pigment is located in the chloroplast of the leaf. The function of chlorophyll a and chlorophyll b is to trap red and blue violet light when they carry out photosynthesis‚ chlorophyll a occurs in green plants while chlorophyll b occurs in green algae.Carotene and Xanthophyll are carotenoid where it can protect the human eye from
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of chlorophyll a and the red leaf lettuce will have a higher pigment of anthocyanin. I believe the spinach leaf in distilled water will have a higher pigment of chlorophyll a and the red leaf lettuce will have a higher pigment of anthocyanin. Discussion Questions: 1. Describe what each of your chromatography strips looked like. Specifically‚ identify the pigments on each strip and compare their positions to one another. The Spinach in acetone(S in a) has a dark green line (chlorophyll a and
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Photosynthesis By Sofie Inwood Aim: To determine whether chlorophyll and light is necessary for starch formation. Hypothesis: Chlorophyll and light are both necessary for starch formation. Materials: * 600mL beaker * Access to water * Safety glasses * Bunsen burner * Tripod * Gauze mat * A large white evaporating dish * Scissors and forceps | * Glass stirring rod * Test tube rack * Test-tube (30mm x 180mm) * Methylated spirits * Iodine solution * 100mL
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mediums. The biomass and standard chlorophyll content were the focus of the experiment. The biomass was measured by taking the mass of the plant. The standard chlorophyll content was measured by taking the absorbance of the leaf acetone solution. The results were significant for biomass but were only significant for the distilled water treatment. Nutrient deficiency has an effect on the biomass of plants‚ but we fail to reject the hypothesis that the standard chlorophyll content of the nitrogen‚ iron
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Green Light Versus Red Light Absorption in Spinach Leaves The goal of the experiment was to determine if green light had less ability to absorb than red light in spinach leaves. This was done by separating the photosynthetic pigments (chlorophyll a‚ chlorophyll b‚ carotene and xanthophylls) from one another using paper chromatography. The separated pigments were then analyzed for their absorption spectrum using a spectrographometer. When the data was graphed it clearly showed the higher rate
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3.8 & 8.2 : PHOTOSYNTHETIC PIGMENTS RESEARCH QUESTION INTRODUCTION The photosynthetic pigments are responsible for absorbing and trapping light energy the major pigments of photosynthesis are the chlorophylls. The two chlorophylls found in green plants are chlorophyll a and chlorophyll b. other pigments include carotenoids and phycobilins‚ sometimes referred to as accessory pigments. Carotenoids occur in all photosynthetic organisms‚ while phycobilins occur in the red algae and cyanobacteria
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visible light wavelengths obstructed by black paper‚ and red‚ blue‚ and green translucent filters. I. Abstract Photosynthesis is a process in which plants use light‚ water‚ and carbon dioxide to produce sugars‚ water and oxygen. Chlorophyll a and chlorophyll b‚ in the chloroplasts of a leaf‚ are responsible for absorbing wavelengths of light for use in photosynthesis with red and blue wavelengths being optimal. Testing for the most productive wavelength of light was done using four separate
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light transport‚ both Photosystems II and I are involved producing ATP and NADPH. Photosystem II absorbs 680 nm of light energy‚ with the oxidation of water; chlorophyll absorbs light‚ entering an excited state and becomes very unstable. It quickly returns to ground state by releasing the absorbed energy to another chlorophyll. The chlorophyll then oxidizes an electron‚ which goes into the electron transport chain
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This is the molecule which makes photosynthesis possible‚ by passing its energized electrons on to molecules which will manufacture sugars. All plants‚ algae‚ and cyanobacteria which photosynthesize contain chlorophyll "a". A second kind of chlorophyll is chlorophyll "b"‚ which occurs only in "green algae" and in the plants.Carotenoids are usually red‚ orange‚ or yellow pigments‚ and include the familiar compound carotene‚ which gives carrots their color. These compounds are composed
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absorption rates for chlorophyll molecules have 435nm and 675nm peaks. This is very similar to the results found in my experiments as one pigment had absorbance peaks at 460-500nm and around 660nm. The same results were found in the other pigments with very similar wavelengths reported in publications and my results. 4. Based off of the results and observations that were also listed in question 3‚ we can determine the likely identity of the pigments. As previously stated‚ chlorophyll has a peak absorbance
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