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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Brittany Snell Nielson Bio 110 Oct-11-2013 Cellular Respiration All living organisms need energy to function and we get this energy from the foods we eat. The most efficient way for cells to harvest energy stored in food is through cellular respiration. Cellular respiration is defined as the aerobic harvesting of chemical energy from organic fuel molecules. Cellular respiration occurs in eukaryotic and prokaryotic cells. It has three main stages: glycolysis‚ the
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Cellular respiration is the process of obtaining energy in order to produce ATP. Cells obtain energy for their metabolic reactions. Cellular respiration includes both aerobic and anaerobic processes. Aerobic is when oxygen is consumed as a reactant and an aerobic is without oxygen. There are three phases in cellular respiration glycolysis‚ Krebs cycle‚ and the electron transport chain. Glycolysis is the first stage and
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Measuring the efficiency of various carbohydrate substrates in yeast fermentation. Cherrishe Brown October 3‚ 2007 Dieldrich Bermudez BSC 2010L Sect# 0560 Discussion As expected in the experiment Glucose‚ Fructose‚ and Sucrose were all utilized for fermentation. Based on the rate of evolution of CO2 the yeast was most efficiently able to utilize the substrate Glucose‚ followed by Sucrose and Fructose respectively. Given more time I believe that Sucrose would have surpassed glucose in total
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FlowCAM® Application Note #105 Yeast Viability Measurements in Fermentation Studies Objective An important component of fermentation processes is to continually monitor yeast growth and viability. The most common method for doing this is using the ASBC hemocytometer count method. In this method‚ samples are taken from the fermentation vessel‚ stained with methylene blue‚ and then counted manually under a microscope using a hemocytometer. While this method is well known and documented
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The drug “dinitrophenol” (DNP) was prescribed by some physicians in the 1940’s to help patients lose weight. This unsafe method was abandoned after a few patients died. DNP uncouples the chemiosmotic machinery by making the lipid bilayer of the inner mitochondrial membrane leaky to H+. Explain how this could cause weight loss. In chemiosmosis‚ NADH are passed along the electron transport chain‚ with energy used to pump protons across the inner mitochondrial membrane. As the protons are transferred
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In bio lab‚ my lab partners and I did a lab experiment involving yeast fermentation. Fermentation is an anaerobic process to regenerate NAD+ to keep glycolysis active. Yeast preforms ethanol fermentation which create ethanol and NAD+. The class used six different types of sugars to determine which fuels fermentation by measuring the amount the carbon dioxide bubbles produced by the yeast. Yeast are single-cell fungi that cannot make their own food. They take the sugars in the surrounding environment
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Group Members: Rafael Gonzalez‚ Giovanni Livani Benchmark: SC.912.SC.L.18.9 Understand the interrelationship of photosynthesis and cellular respiration. Problem Statement: Does Exercise let you Breath more CO2? Intro: Cellular respiration allows organisms to use energy stored. The materials produced are carbon dioxide and water. The body has stored away from the foods we eat in the form of glycogen‚ for the energy required to contract muscles movement. Lactic acid fermentation is glucose and
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Cellular Respiration I/ Introduction - Cellular respiration is the cellular process whereby carbon-containing compounds are broken down through the series of reactions that result in the gradual release of energy. - Cellular respiration consumes oxygen (O2) and produces (CO2). Because oxygen is required so cellular respiration is aerobic. - Include metabolic pathways: glycolysis‚ transition reaction‚ the Krebs cycle‚ electron transport system and oxidative phosphorylation. - Overall reaction:
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Abstract The hypothesis states that plants respire at a faster rate if they are exposed to wind‚ opposed to no wind. This was tested by putting one plant in water in front of a fan and the other plant in water‚ but with no fan. The results showed that the plant in front of the fan transpired more. However‚ since the plant blew cold air it affected the rate of transpiration and altered the experiment. Overall‚ this experiment supports the hypothesis that wind makes plants transpire more.
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