Spencer Richardson Biology 111 Lab 7 Tube Initial Gas Height(mm) Final Gas Height(mm) Net Change 1 .5 .7 + .2 2 .5 .2 -.3 3 .5 .7 + .5 4 .5 1.0 +.5 5 .5 .5 0 1. The clinical formula of Equal was not metabolized because it has no sugar. Splenda is actually derived from sugar so the results would be different. 2. Carbon Dioxide was the gas that was produced. Two methods would be by examining the bottom of the tube and to measure the net difference. 3. The
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Enzymes are catalytic proteins that selectively speed up chemical reactions without by consumed by the reaction itself (1). Enzyme activity is significantly affected by factors such as temperature‚ substrate concentration‚ enzyme concentration and pH. Enzymes are highly specific and only catalyse one specific chemical reaction‚ speeding up the reaction by lowering the activation energy‚ the energy required to start a chemical reaction (2). At high temperatures and with various mechanical forces or
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separate water into hydrogen and oxygen and then they combine hydrogen and carbon dioxide to make sugars. 2. What happens to food energy during photosynthesis? During cellular respiration? In Photosynthesis light energy along with carbon dioxide are used to make molecules or (food energy). In Cellular Respiration food energy is broken down to form ATP. 3. Why is photosynthesis important to you? Photosynthesis is important because plants‚ bacteria‚ and small animals use photosynthesis
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Title: Demonstration of Fermentation using Yeast Cells |Comments |Text | |Abstract | |Sections of the report are clearly |This experiment is designed to determine if yeast cells undergo fermentation when placed in a closed
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was that as more hydrogen peroxide was added to the yeast‚ the higher the rate of reaction. Graph 5 further supports the original hypothesis‚ as it demonstrates the change the rate of reaction according increased volume of hydrogen peroxide‚ whereby the fastest rate of reaction occurred at the highest number of drops added to the solution.
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speed up the rate of reaction without itself being used up in the process. Enzymes provide an alternate reaction pathway by lowering the activation energy needed for a reaction to occur. For two molecules to react they must collide with each other‚ however‚ they have to collide with sufficient energy. Sufficient energy means that between them they have enough energy to overcome the energy barrier to reaction. This is called the activation energy. Even though enzymes can alter the rate of reaction
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This scientific report will be based on cellular respiration‚ or fermentation. In specific‚ how the type of sugar affects the rate of fermentation. The aim of this experiment was to find which type of sugar was best suited to produce ethanol. In the experiment‚ four different sugars were used‚ they included sucrose‚ glucose‚ lactose and fructose. This research is still relevant today‚ as alcohol is still consumed and is required on a large scale. This makes it crucial to companies to find the best
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oD 4.1 Respiration Why organisms undergo respiration What is respiration and why do we need it? Respiration is the process whereby energy is released from food molecules (most usually glucose). It takes place inside living cells‚ both eukaryotic and prokaryotic. The process takes place inside the cytoplasm and the mitochondria. Energy is used to synthesise adenosine triphosphate (ATP)‚ which acts as a short-term energy store in cells. All living organisms need energy to drive their
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The hypothesis made prior to the experiment was not correct - the distilled water did result in the most weight gain (g); however‚ the 5% salt concentration did not result in the least weight gain (g). Table 1 clearly highlights that the 3% salt concentration resulted in the least weight gain (g). The distilled water resulted in the most weight gain (g) because the solution is hypotonic – a hypotonic solution results in the water diffusing into the cell because the molecules of the substance are
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Ash Chen IB Economics SL Mr. Murf Exchange Rates and The Balance of Payments Exchange Rates Living in the 21st century‚ trading has become a major component of our global economy. However‚ with over 200 countries and 180 currencies in the world‚ countries cannot trade with each other without a way to pay each other in their currency. Thus‚ in order to trade‚ countries have developed a formula to convert their money to that of another country’s. That formula is the exchange rate. The exchange
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