“How humans impact the Carbon‚ phosphorus‚ and nitrogen cycles” Christine Richardson Environmental Science May 1‚ 2013 The carbon cycle is based on carbon dioxide which is a very important element because it is a part of all life. All living things are made of elements such as oxygen‚ carbon‚ hydrogen‚ nitrogen‚ calcium‚ and phosphorus. There are such compounds that are necessary for life such as sugars‚ fats‚ proteins etc. that joins with carbon to form these essential
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Topic 8: Cell respiration and Photosynthesis 8.1 Cell respiration 8.1.1 State that oxidation involves the loss of electrons from an element‚ whereas reduction involves a gain of electrons; and that oxidation frequently involves gaining oxygen or losing hydrogen‚ whereas reduction frequently involves losing oxygen or gaining hydrogen Oxidation involves the loss of electrons from an element‚ whereas reduction involves a gain of electrons; and that oxidation frequently involves gaining oxygen
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The goal of this experiment was to explore how temperature would influence the rate of cellular respiration of beans. It was hypothesized that as the temperature of the beans increased‚ the rate of cellular respiration would increase as well. In this experiment‚ the independent variable was the temperature‚ which gradually increased as time went by‚ and the dependent variable was the rate of cellular respiration‚ which was shown by the change in the amount of CO2 and O2 in the container. During the
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Cellular Respiration  Cellular respiration is the process of oxidizing food molecules‚ like glucose‚ to carbon dioxide and water. C6H12O6 + 6O2 + 6H2O → 12H2O + 6 CO2 The energy released is trapped in the form of ATP for use by all the energy-consuming activities of the cell. The process occurs in two phases: glycolysis‚ the breakdown of glucose to pyruvic acid the complete oxidation of pyruvic acid to carbon dioxide and water In eukaryotes‚ glycolysis occurs in the cytosol. (Link to
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3 Phases of Carbon Cycle Phase 1: Carbon fixation The Calvin cycle incorporates each CO2 molecule by attaching it to a five-carbon sugar named ribulose biophosphate (abbreviated RuBP). The enzyme that catalyzes this step is RuBP carboxylase‚ or rubisco. The product of the reaction is a six carbon intermediate so unstable that it immediately splits in half to form two molecules of 3-phoshpyglycerate (for each CO2) Phase 2: Reduction Each molecule of 3-phsophoglycerate receives an additional
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Testing for Cellular Respiration by Balloon Inflation Experiment Number 2 Abstract: Through a timed test it was discovered which substance A or substance B contained glucose and when combined with yeast results in respiration; it was found that substance A contained glucose and resulted in respiration when combined with yeast. At 0 minutes all four balloon’s circumference was 9 centimeters; substance B and salt remained the same circumference‚ 9 centimeters‚ for
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together in specific orders and create metabolic pathways; this is how enzymes take on the product of other enzymes as substrates. In doing so‚ catalytic reactions occur and the products formed are then passed onto another enzyme. Enzymes work by lowering the activation energy for reactions; this speeds up the rate of the reaction process as illustrated in figure 3 below (Grisham‚ 2012). (Figure 3‚ http://4.bp.blogspot.com) An example of how enzymes work within the body is the breakdown of fructose.
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Humans have been around for millions of years‚ and they have impact each of the cycles in many ways. The carbon cycle humans have impact the most. By burning fossil fuels we have increased atmospheric carbon dioxide by at least 35%. (Boorse‚ 2011). The impact that humans have had on this cycle has change many different elements of the natural environment. An example is the ozone layer is slowly being thinned out‚ which in turn is heating up the atmosphere of the earth. The thinning of the ozone
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file contains BIO 240 Week 1 Photosynthesis and Respiration Paper Biology - General Biology Write a 700- to 1‚050-word paper summarizing the events of cellular respiration and photosynthesis and examine the relationship between the two. Include the following in your paper: · For photosynthesis‚ include a summary of the events in: o The Light Dependent Reaction o The Calvin Cycle (Light Independent Reaction) · For cellular respiration‚ include a summary of the events
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A Study of Cellular Respiration & Gas Production in Peas We conducted this lab in order to determine the relationship between gas production and the cellular respiration rate between germinating peas and dormant peas. Cellular respiration is the procedure of changing the chemical energy of organic molecules into a form of energy that can be used by cells called ATP (adenosine tri-phosphate). Cellular respiration is conducted in 3 processes: Glycolysis‚ Citric Acid Cycle‚ and Oxidative
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