Abstract: The rate of photosynthesis and cellular respiration can change in varying conditions. How does the rate change with varying degrees of temperature and light exposure? To test this algae beads were exposed to a CO2 indicator‚ which changes colors based on the level CO2 level present. The algae beads were exposed to two different variables‚ light and temperature and tested for color change‚ Ph‚ level‚ and CO2 absorbance level. The beads were exposed to a light and a dark condition‚ and another
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LIGHT IN PHOTOSYNTHESIS Theory: Leaf discs float normally. When the air spaces are infiltrated with the solution the overall density of the leaf disc increases and the disc sinks. The infiltration solution includes a small amount of sodium bicarbonate. The bicarbonate ions serve as the carbon source for photosynthesis. As photosynthesis proceeds oxygen is released into the interior of the leaf which changes the buoyancy – causing the discs to rise. Since cellular respiration is taking place
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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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10 Science Questions Every High School Graduate 1. What percentage of the earth is covered by water? Answer: About 71 percent of the earth’s surface is covered by water. --Submitted by Robert Gagosian‚ Woods Hole Oceanographic Institute 2. What sorts of signals does the brain use to communicate sensations‚ thoughts and actions? Answer: The single cells in the brain communicate through electrical and chemical signals. --Submitted by Torsten Weisel‚ Rockefeller Institute‚ New York 3. Did
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The purpose of the experiment is to determine the effects of sugar on photosynthesis in Elodea. Sugar water with Elodea‚ water with Elodea‚ and water (control) are used to test for photosynthesis. Five drops of sugar water were added to sugar water with Elodea beaker. The three beakers were left under normal light for photosynthesis to occur. After 60 minutes‚ NaOH solution was added to each beaker to test the volume of CO2. The result shows that both Sugar water with Elodea and water with Elodea
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is the name of the port used by an Ethernet cable? What is the name of the port used by a dial-up modem? RJ-45‚ RJ-11 9. If you want to upgrade your 100BaseT Ethernet network so that it will run about 10 times the current speed‚ what technology would you use? Gigabit Ethernet 10. What is the maximum length of a cable on a 100BaseT network? 100 meters or 328 feet 11. What does the 100 in the name 100BaseT indicate? The transmission speed of the network which is 100 Mbps.
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Photosynthesis is the process in which autotrophs use light energy to convert carbon dioxide and water into glucose. This conversion into chemical energy is associated with the action of the green pigment chlorophyll. Chlorophyll molecules located in the thylakoid membrane of the chloroplasts are arranged into complexes known as photosystems. Each photosystem contains the reaction center complex and is surrounded by light harvesting complexes. The light harvesting complexes are composed of pigment
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Effect of Extreme Temperatures on the Rate of Photosynthesis 2. Jeffrey Xia 2. Abstract A previous lab in which we conducted‚ tested whether or not the light intensity had an effect on the rate of photosynthesis. We concluded that light intensity did possess an effect on the rate of photosynthesis – the closer the experimental plant units were to the light source‚ the more experimental plant units exhibited the effect of gas exchange in photosynthesis. Therefore‚ in this lab‚ we desired to test
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Factors Affecting Photosynthesis Low light intensity lowers the rate of photosynthesis. As the intensity is increased the rate also increases. However‚ after reaching an intensity of 10‚000 lux (lux is the unit for measuring light intensity) there is no effect on the rate. Very high intensity may‚ in fact‚ slow down the rate as it bleaches the chlorophyll. Normal sunlight (usually with an intensity of about 100‚000 lux) is quite sufficient for a normal rate of photosynthesis. Open and Closed
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Peter Dang Mrs. Truesdell AP Biology Period 5 2 October 2013 CHAPTER 7 STUDY GUIDE AN OVERVIEW OF PHOTOSYNTHESIS Autotrophs are plants that can feed themselves by making their own food. Photo-autotrophs are organisms that produce organic molecules from inorganic molecules using the energy of light. Producers are when plants make their own organic molecules. A redox reaction is oxidation and reduction. Photosynthesis takes water and carbon dioxide to make glucose and oxygen. Cellular respiration
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