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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the rate of anaerobic respiration in yeast. Research and Rationale: My investigation consists of researching and carrying out experiments in order to obtain results on how the rate of respiration is affected by temperature. In the experiment I will use one sugar but will be changing the temperatures. In my investigation I will carry out an experiment where one sugar is used to test how changes in temperature (10⁰C - 60⁰C) affect the rate of anaerobic respiration in yeast. I will be carrying
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Material Cell Energy Worksheet Answer the following questions: Cellular respiration: • What is cellular respiration and what are its three stages? A living version of internal combustion-is the main way that chemical energy is harvested from food and converted to ATP energy‚ it is also called an aerobic process‚ which is just another way of saying that it requires oxygen. So cellular respiration is defined as the aerobic harvesting of chemical energy from organic fuel molecules
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requires oxygen Look up and define anerobic: refers to a process that is ‘not in air’ or does not require oxygen Cellular respiration specifically refers to : energy-releasing pathways that occur within a cells mitochondria ….while respiration usually just means: the act of breathing A. The Krebs Cycle - What is it? The second stage of cellular respiration that occurs if oxygen is present What happens during the Krebs Cycle? (Key Concept): During Krebs Cycle‚ pyruvic acid
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phosphorylation‚ and reduces three molecules of NAD and one molecule of FAD for use in Oxidative Phosphorylation. The cycle is preceded by Glycolysis‚ which also occurs in anaerobic respiration‚ and the pyruvate dehydrogenase complex‚ which occur in the cytoplasm and the mitochondrial matrix respectively. In aerobic respiration‚ glycolysis breaks down one molecule of glucose and two molecules of pyruvate‚ and gives a net product
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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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converted to glucose first. There are two ways in which a cell or cells can gain energy – cellular respiration or fermentation. There are two types of fermentation and that is alcoholic fermentation where pyruvate‚ produced in glycolysis‚ is converted into lactate‚ and also lactic fermentation used by plants and some fungi and they convert pyruvate to ethanol and carbon dioxide. Cellular respiration is a fundamental‚ catabolic process by which food is broken down in order to produce high energy adenosine
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Define metabolism: The sum of all biological chemical reactions inside a cell or organism Differences in catabolism and anabolism: Catabolism is an enzyme-regulated chemical reaction that releases energy. Complex organic compounds such as glucose‚ amino acids‚ glycerol and fatty acids are broken down into simpler ones. The energy of catabolic reactions is used to drive the anabolic reactions. Anabolism is also enzyme regulated but requires energy for taking the simpler broken down components
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run out and organisms would die. The amount of carbon nitrogen and oxygen on the earth is fixed‚ they can exists in different forms but no more may be added. So that these don’t run out they are cycles so they may be reused. Photosynthesis and respiration are the reverse of each other‚ and you couldn’t have one without the other. Carbon is an essential component of all organic substances‚ necessary in nucleic acids‚ proteins‚ carbohydrates. The only way that can enter ecosystems is when it’s used
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Biochemistry Essential Elements of Life Carbon‚ hydrogen‚ oxygen‚ nitrogen (96%) Calcium‚ phosphorus‚ potassium‚ sulphur (4%) Isotopes Atoms of an element that differ in neutrons Radioactive isotopes decay spontaneously‚ giving off energy Cohesion Hydrogen bonds hold water molecules together Adhesion is an attraction between two substances Surface tension measures how hard it is to break the surface tension of a liquid Hydrocarbons Organic molecules consisting of only carbon
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