Abstract The effect of nature of substrates on the rate of cellular respiration in yeast was determined by using the Smith fermentation tube method. Mixtures of 15ml distilled H2O‚ 10% yeast suspension and 15ml of the following solutions (all at 10% concentration):1- starch‚ 2 – lactose‚ 3 – sucrose‚ 4 – glucose‚ 5 – fructose‚ 6 – distilled water ‚ were poured in six smith fermentation tubes. Cotton balls were plugged in the openings of the tubes and the tubes were kept upright and observed for
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Cellular Respiration OVERALL EQUATION: C6H12O6(aq) + 6O2(g) -> 6CO2(g) + 6H2O(l) 3 OVERALL GOALS: 1. Break bonds between the 6-carbon molecules of glucose – results in 6 CO2 molecules 2. Move hydrogen atom electrons from glucose to O2‚ forms 6 H2O molecules 3. Trap as much free energy released as possible in the form of ATP Stage 1: Glycolysis Cytoplasm‚ 10 reactions‚ anaerobic Stage 2: Pyruvate Oxidation Mitochondrial matrix‚ 1 step process Stage 3: The Krebs Cycle Mitochondrial
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In photosynthesis‚ light energy is transformed into chemical energy‚ thus chemical energy is the product. This is different from respiration because respiration transforms chemical energy into energy usable by cells; in this case chemical energy is the source. Photosynthesis occurs in the chloroplasts‚ using the chlorophyll inside of the chloroplasts‚ while respiration occurs in the mitochondria. Photosynthesis produces oxygen as a by-product‚ while aerobic respiration requires oxygen to even work
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The Carbon Cycle Poppy Matless Carbon is present in all living organisms. When organisms die‚ the carbon is recycled for future generations. 1. Carbon is released as CO2 via respiration and combustion 2. CO2 is absorbed by producers (grass‚ plants etc) 3. Animals feed off of the plant‚ passing on carbon throughout the food chain‚ losing some carbon as CO2 respiration. 4. When the animal dies‚ it is eaten by decomposers‚ and the carbon returns to the atmosphere 5. If decomposition
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Cellular Respiration is part of the metabolism of organisms‚ it provides the energy for organisms’ basic life activity. The process of cellular respiration converts oxygen and water to glucose and carbon dioxide‚ and usually occurs inside of mitochondria. Thus the cellular respiration is closely related to the life of all organisms‚ especially the human. In a case study in cellular respiration‚ seven unrelated people died in five days‚ and the reason is unclear. However‚ all the victim had same
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- Cellular Respiration Assignment - 1. What two molecules are formed when a phosphate is removed from ATP? There are three phosphate groups in ATP molecule (Adenosine Triphosphate)‚ when removing one phosphate molecule‚ ADP molecule is formed (Adenosine Diphosphate). 2. What is the function of ATP? Describe the molecule. The function of ATP is storing energy within a cell. ATP is adenosine triphosphate‚ C10H16N5O13P3‚ a high energy complex‚ giving the necessary power to push metabolistic
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Cellular Respiration Lab Report Wednesday 8:00 A.M. Lab March 2nd‚ 2005 I. Introduction In this lab we are measuring the amount of oxygen used in both germinating and non germinating peas. We are measuring the oxygen consumption by taking a reading of a respirometer submerged in two water baths. The first bath will be cold water and the second warm to determine the effect of temperatures on oxygen consumption. Our negative control will be glass beads to measure to increase or decrease
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4 Determining the rate of Cellular Respiration Using Germinating and Dry Peas Purpose: To determine the rate of cellular respiration using dry and germinating peas. Introduction: In this lab‚ we are investing cellular respiration‚ specifically aerobic cellular respiration. Aerobic cellular respiration is the process by which cells consume oxygen during the oxidation of glucose and produce CO2 as a byproduct. During cellular respiration‚ glucose is split into a 6 carbon sugar‚ G3P through the use
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the Krebs cycle will take place? 6. What molecule is found at the beginning of acetyl co-A formation? 7. a. How is pyruvic acid changed to acetyl co-A? b. When pyruvic acid is changed to acetyl co-A‚ is it being oxidized or reduced? 8. Summarize all of the important products (and their quantities) yielded after one pyruvic acid molecule “leaves” glycolysis and goes through the acetyl co-A formation stage. 9. What is another name for the Krebs cycle? Citric acid cycle 10. How is the 6-carbon
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Cellular respiration is the process by which food is broken down and converted into usable energy for the body. Essentially during this principally catabolic process‚ glucose molecules are broken down into energy known as adenosine triphosphate (ATP). Thus‚ glucose is the common energy source in cellular respiration. The process of cellular respiration begins with one glucose molecule and oxygen that yields the production of ATP as well as byproducts of water and carbon dioxide. This process is separated
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