Photosynthesis is a chemical process that converts the sunlight into a chemical energy that plants store for later. Without photosynthesis‚ the world as we know it would not exist. All the plants would die and so would a major food and oxygen source. During Photosynthesis water is sucked up through the roots up the stem and to the leaves. The leaves take in carbon dioxide and begin to absorb sunlight. these things combine to make glucose and oxygen. The plant then uses the glucose and oxygen is
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Submit your completed lab report to the Lab: Photosynthesis Lab assignment link for grading. For information on how this assignment will be graded‚ please visit the Course Information sectionChlorophyll and Accessory Pigments A pigment is any substance that absorbs light. The color we see comes from the wavelengths of light that reflect. Chlorophyll‚ the green pigment common to all photosynthetic cells‚ absorbs all wavelengths of visible light except green. The green reflects back to our eyes
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Photosynthesis Lab Data Collection: The absorption of different wavelengths of light by Chlorophyll Wavelength (nm) Absorbance of light by chlorophyll (Arbitrary units) Diluted Calculation New Reading (Arbitrary units) Violet 430 2.35 50% 2.35 x 2 3.20 Blue 470 1.09 - - 1.09 Blue-Green 492 0.38 - - 0.38 Green 520 0.77 - - 0.77 Yellow-Green 550 0.85 - - 0.85 Yellow 580 1.43 - - 1.43 Orange 600 0.65 - - 0.65 Red 700 0.16 - - 0.16 Absorption and reflection of light: Different
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processes of aerobic respiration and photosynthesis. To start‚ aerobic respiration can be defined as a biochemical pathway through which chemical bond energy is released from food and changed into ATP. On the other hand‚ photosynthesis is manufacturing of carbohydrates out of CO2 and the splitting of water in the presence of light. Photosynthesis and aer. respiration can be the same in many ways. For instance‚ both of them contain cycles. In photosynthesis‚ there is the Calvin cycle‚ and photosystem
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INTERPRETATION | POSITIVE TEST | Iodine/Potassium Iodide solution changed from brown to blue- black | Starch is present | NEGATIVE TEST | No colour change | Starch is not present | DISCUSSION QUESTIONS AND ANSWERS 1. Describe Photosynthesis. Use a symbol equation. Photosynthesis is the process
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All organisms on earth depend on photosynthesis‚ in which light energy is used to make sugar and other food molecules from carbon dioxide and water. For example‚ plants and other photo-synthesizers need only energy from sunlight‚ carbon dioxide from air‚ and water from the soil to make the sugar glucose. Photosynthesis is the most important chemical process on earth because it provides food for virtually all organisms‚ not only for photo-synthesizers but for the organisms that eat them. Plants can
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Kelly Felicetta Tougher Plants Beating Stress by Protecting Photosynthesis in Genetically Modified Plants Part 1: Stress 1. The major stresses that agricultural plants face are drought stress‚ cold stress‚ heat stress‚ flooding stress‚ mineral deficiency stress‚ salinity stress‚ and aluminum toxicity stress. Part 2: Glycine Betaine 2a. Wild type means it is the phenotype of the typical form of a species as it occurs in nature. 2b. L1 is different from the wild type because it is a strain
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of spinach discs. We were hypothesizing that if we place all 6 individual cups underneath a different color of light‚ the spinach discs that produce enough oxygen will have the highest amount rise‚ which will show us the optimal color of light for photosynthesis. These different colors of light included blue‚ red‚ green‚ fluorescent‚ regular light‚ and classroom light. The classroom light was our control cup during the lab. Before we conducted our experiment‚ the class learned about the photosynthetic
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Answers to Photosynthesis Practice AP Biology 1. Draw a picture of the chloroplast and label the stroma‚ thylakoid‚ thylakoid lumen (space)‚ inner membrane‚ outer membrane. 2. Using 18O as the basis of your discussion‚ explain how we know that the oxygen released in photosynthesis comes from water. When the oxygen in water has the radioactively labeled oxygen‚ the gas released from photosynthesis also has the labeled oxygen. This shows that the oxygen gas given off during photosynthesis comes from
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Photosynthesis depends on an interaction between two sets of reactions: the light reactions and the Calvin cycle. Chlorophyll and the other molecules responsible for the light reactions are built into the thylakoid membranes. The enzymes that catalyze the Calvin cycle are located in the stroma. Beginning with the absorption of light by chlorophyll‚ the light reactions convert light energy into chemical energy in the form of ATP and NADPH. The ATP provides the energy‚ and the NADPH supplies the electrons
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