¬¬¬Biology Exam 4 Energy III – Cellular Respiration (Krebs Cycle and Electron Transport Chain) A. The Krebs Cycle a. Energy i. The net gain of 2 ATP and 2 NADH represents an effective transfer of 20 kcal of energy to ATP (about 10 kcal each) about 80 kcal of energy to NADH (about 40 kcal each)‚ for a total of about 100 kcal ii. Complete oxidation of glucose results in the release of 684 kcal of energy‚ significant energy still remaining in pyruvate b. Eukaryotes i. Pyruvate is transported
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about cycles. Respiration Cells in the body use ATP as a direct source of energy. The conversion of glucose into ATP takes place during respiration. There are 2 different types of respiration‚ the more common and frequent one is aerobic respiration which is the production of ATP for energy. The less common one is anaerobic respiration‚ the production of lactate during which the muscles have a limited supply of oxygen‚ and however keep working despite this. Aerobic respiration requires oxygen
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stimuli‚ e.g. temperature‚ oxygen concentration and levels of sunlight. These may be over time‚ e.g. winter fur to summer fur‚ or quickly‚ e.g. changing size of pupils. Internal environments change too- the build up of carbon dioxide as a result of respiration changes the pH of the tissue fluid‚ and therefore inhibits enzyme activity. Multicellular organisms need to coordinate different organs‚ so this requires a good communication system which will: • Cover the whole body • Enable cells to communicate
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Inside the body they preform cellular respiration‚ they take in nutrients from the cell‚ break it down‚ and turn it into energy. This energy is then used by the cell to carry out various life processes. Without this energy‚ none of the organelles within the cell would be able to function‚ not
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Results: The mealworms that were in the room temperature water have a higher cellular respiration rate than the mealworms in the cold water. This is because while they are in the cold water‚ the mealworm’s body slows down which decreases the amount of CO2 that is being produced. Unlike the mealworms in room temperature water‚ their cellular respiration was higher because their body temperature remained the same creating CO2 at a faster rate. Since there were two different controlled groups‚ there
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NATIONAL CENTER FOR CASE STUDY TEACHING IN SCIENCE The Mystery of the Seven Deaths: A Case Study in Cellular Respiration by Michaela A. Gazdik Biology Department Ferrum College‚ Ferrum VA Part I – The Symptoms Imagine that you work at the medical examiner’s office for a major metropolitan city. As Chief Medical Officer‚ you investigate suspicious deaths and provide toxicology services for the county. Unfortunately‚ it’s been a busy week. In the past five days‚ seven people have died‚ all with similar
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Aerobic Respiration Do you know indulging in physical movements is associated with a chemical reaction? The process requires energy‚ which is yielded by aerobic respiration. Over here‚ respiration helps breaks down glucose (an energy source) into water‚ carbon dioxide and energy in form of ATP (adenosine triphosphate). The balanced cellular respiration equation is represented as: C6H12O6 + 6O2 → 6CO2+ 6H2O + Energy (36 ATPs) Anaerobic Respiration Due to overexercising
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ATP molecules for every glucose molecule that is oxidized by aerobic respiration is because the NADH that is made in the cytosol during glycolysis cannot diffuse through the inner membrane of the mitochondrion‚ it must be transported into the mitochondrial matrix. So as a result the active transport of NADH consumes ATP releasing only 36 ATP molecules. 18) Anaerobic pathway differs from the pathways of aerobic respiration at the sites they occur in eukaryotic cells by the presence of oxygen
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mitochondrion becomes even more complex when divided into its two internal compartments‚ the intermembrane space and the mitochondrial matrix. In the mitochondria‚ the biochemical reaction‚ respiration takes place. The balanced formula for respiration is C6H12O6 + 6 H2O à 6 H2O + 6 O2 + E‚ the catalyst being enzymes. Respiration is when oxygen is consumed as a reactant along with the organic fuel. In order for the process take place‚ food must be available‚ along with oxygen. The first two stages occur due
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light-dependent reactions‚ dark (light-independent) reactions Previous knowledge: In 6th grade (6-2.7)‚ students summarized the processes required for plant survival (including photosynthesis‚ respiration‚ and transpiration). In 7th grade‚ students explained how cellular processes (including respiration‚ photosynthesis in plants‚ mitosis‚ and waste elimination) are essential to the survival of the organism (7-2.4) and explained how a balanced chemical equation supports the law of conservation
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