Introductory Biology 1 Biology 1003 Fall Term 2011 Lab Number: 3 Title: Cell Energetics: Enzyme Role in Biological Reactions Name: Brandon Moore Student Number: 100819124 Lab day and time: Wednesday pm Date: Wednesday November 23‚ 2011 Introduction Enzymes are a key aspect in our everyday life and are a key to sustaining life. They are biological catalysts that help speed up the rate of reactions. They do this by lowering the activation energy of chemical reactions (Biology
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Is an Enlarged Liver a Serious Condition? Enlarged liver is a term some individuals use to describe what doctors call Hepatomegaly. It is also called swollen liver. The phrases swollen liver or enlarged liver are self-explanatory. So the question becomes‚ what is the cause of enlarged liver‚ and how serious a health threat can it be? It should be stated at the start that swollen liver is not a disease itself. It is a sign of some specific liver infection‚ damage or a part of an abnormal
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Beef Jerky and Hardtack the Nearly Perfect Survival Meal Foods that do not require any preparation‚ are lightweight‚ and are shelf stable make ideal foods for a survival pack or to have on hand for emergencies at home‚ at the office‚ or even when stranded in your vehicle. The best part is that you can make beef jerky and hardtack at home‚ and by no means do you need extensive cooking or food preparation skills. You have enough to worry about when you find yourself in a survival situation‚ so make
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Potato Enzyme Lab INTRODUCTION An enzyme is a protein that speeds up or slows down a specific chemical reaction in an organism. A good rule of thumb is to remember that enzyme names end in “-ase”. This will help in identifying enzymes in further readings. Generally enzymes are catalysts. Hydrogen peroxide is a toxic chemical that is produced in many organisms during metabolism. Organisms must get rid of this toxin to survive. One reaction turns the hydrogen peroxide into water and oxygen. The
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Investigation of the effect of metal ions on enzyme activity Objective To study the effect of two heavy metal ions‚ lead (II) ions and silver ions on the enzyme activity of invertase. Introduction Hypothesis: The rate of enzyme reaction of invertase decreases and the reaction eventually stops as the heavy metal ions inhibit the enzyme reactions. Biological principle: Heavy metal ions are non-competitive inhibitors. They do not compete with the substrates for the active sites of enzymes. They attach
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Investigating the effects of changing temperature on the activity of enzymes Background information: Renin is an enzyme that catalyses the coagulation of milk. It is found in the stomach of many animals and is used in making cheeses and junkets. It is found in the gastric juices or gastric mucosa of many mammals‚ including humans. In the human stomach‚ particularly those of infants‚ rennin works to curdle milk so that pepsin‚ another stomach enzyme‚ can further breakdown the proteins into absorbable
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Chianina breeds are continental breeds. These three breeds have exceptional characteristics which they pass on to their progeny. Marbling‚ muscling‚ calving ease‚ and low birth rates are just a few of the aspects that are good to look for in choosing beef cattle. Red Angus has many great traits to make them a viable seedstock choice. This particular breed is known for calving ease. Calving ease is when the birth of a calf does not require assistance and does not impose undue strain on the calf or
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Enzymes are biological catalysts‚ large protein proteins that have a very specific three-dimensional shape which makes them highly specific and only work on one or a few similar chemical reactions. Enzymes themselves are not consumed in the reaction‚ but they help attract substrates into correct position to undergo chemical reaction. Enzymes greatly speed up the rate of biological reactions by lowering the energy of activation. To get a sense of the speed and efficiency of enzymes‚ substrates can
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RESULTS 28⁰C was the optimal temperature. 28⁰C had the maximum rate of reaction for the class data and results provided by this experiment; the results were represented graphically in graph 1 and graph 2. The reason for having 2 tables and graphs is because 28⁰C was done twice. Data for 28⁰C was collected in this experiment and it was collected again by peers in the classroom. Results are identical because all temperatures except 28⁰C was collected once from peers. Based on the results from the
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Ching Man 5C(21) Effects of temperature on the activity of lipase Aim: To investigate the effects of temperature on the activity of lipase enzyme on milk which contain fats or lipids. Introduction: Enzyme is a kind of biological catalyst that made up of protein. It can speed up the metabolic reactions on various kinds of substances. Like lipase can break down lipid into glycerol or fatty acids in milk. Since enzyme is made up of protein which easily affected by varies temperature. This experiment
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