Speech Communications‚ SPCH ORBC-MW06 22 March 2010 Hyperbaric Chambers and Oxygen Therapy: Life Saver Specific Purpose: To inform audience of hyperbaric chambers and the oxygen therapy that they provide. Central Idea: The description of a hyperbaric chamber‚ the oxygen therapy process‚ the illnesses it treats and the side effects. Introduction I. Oxygen‚ one of the most important elements without which life would not exist. Without
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Enzymes INTRODUCTION Enzymes are protein cells and they are found in the gut. They help to break down the food you eat. Enzymes are produced by living cells and they speed up reactions because they are biological catalysts. If we did not have enzymes‚ the reactions in our cells would be too slow to keep us alive. This means that they are extremely important for our survival. The properties of enzymes are: ⋆ They can be used many times‚ because they can speed up reactions without
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Independent Research Task- Ellen Ryan The Effect of Water Temperature on the time taken to dissolve Salt Aim: To see the effect of water temperature on salt. Hypothesis: If the temperature of the water is increased the time taken for the salt to dissolve completely will be shorter. Equipment Heat proof mat Tripod Bunsen burner Gauze mat Electronic Balance 2 beakers Measuring cylinder Salt Water Stirring rod Thermometer Safety glasses Stopwatch Plastic spoon Method:
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Enzyme Lab Write-Up Purpose: To observe how an enzyme affect the speed of chemical reaction. To describe how the concentration of an enzyme affects its ability to work. Hypothesis: Depending on the concentration of the catalase which the disk is soaked in‚ it will have a direct correlation on the rate of hydrogen peroxide being broken down into oxygen gas. Prediction: Since the rate of reaction can be lowered by the addition of catalysis such as an enzyme. Moreover to
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Enzyme Kinetics Marcos‚ Nelissa S. Institute of Chemistry‚ University of the Philippines‚ Diliman‚ Quezon City 1101 Philippines ABSTRACT The rationale of the experiment is basically founded in the concept of reaction rates as affected by enzyme‚ and how the enzyme works is competed by a competitive inhibitor‚ thereby impeding the forward reaction. In this experiment‚ o-diphenol oxidase‚ an enzyme that causes the browning in fruits‚ was extracted from banana and reaction rate of this was established
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Enzymes are generally protein macromolecules that act as catalysts in metabolic reactions. A catalyst is a chemical agent that speeds up a reaction without being consumed by the reaction. Enzymes speed up metabolic reaction rates by lowering the activation energy barrier‚ which is the amount of energy initially needed to spark a reaction. It allows reactant molecules to absorb enough energy to break bonds and react without raising the temperature to an extreme. During this process the substrate
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Enzymes and ATP Enzymes act as protein catalysts in biochemical processes Enzymes bind to a substrate and forms the enzyme substrate complex. Enzymes work by lowering the energy of activation. Activation energy must be supplied for the reaction to begin‚ once supplied‚ the reaction can proceed on its own. Enzymes can speed up events. They are not used by during the reaction because the enzyme stays the same‚ it does not change during the reaction. (Hudon-Miller‚ Enzymes‚ 2013) Enzymes act as
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Measuring Brain Activity Most of the noninvasive imaging methods estimate brain activity by changes in blood flow‚ oxygen consumption‚ glucose utilization‚ etc. Discuss the potential problems with using this type of indirect measure. The brain is the control center of the human body. It sends and receives millions of signals every second‚ day and night‚ in the form of hormones‚ nerve impulses‚ and chemical messengers. This exchange of information makes us move‚ eat‚ sleep‚ and think.
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Oxygen Delivery Devices Fact: Oxygen is a medication ordered by the physician Humans naturally breath 21% oxygen from the room air Normal oxygen saturation is 95-99% Clinically‚ if not receiving oxygen therapy‚ a patient on room air should have pulse ox reading of at least 92% or above Definitions: Pulse oximeter – a non-invasive way to monitor the percentage of oxygen carried in blood. Hypoxia – Impaired level of oxygen in the body Hypoxic - Lack of oxygen in the tissues‚ tissue starved
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Design your own experiment: Effect of pH on enzymatic activity Background Information: Trypsin is a protease which conducts hydrolysis forming peptides. It is an enzyme which is secreted by the pancreas into the small intestine and works best in an alkaline environment. Egg white is used in this practical as it is found to contain the protein/ enzyme trypsin. pH is the measure of the amount of H+ ions in a solution‚ these ions affect the shape of the enzyme. Hypothesis: That as pH increases
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