Lab #5: Dissolved Oxygen Lab Be sure to read and understand the below instructions BEFORE the lab! Experiment 1: Investigating the Effect of Temperature and Salinity on the Concentration of Dissolved Oxygen in Water Introduction: In an aquatic environment‚ oxygen must be in a solution in a free state (O2) before it is available for use by organisms (bio-available). Its concentration and distribution in the aquatic environment are directly dependent on chemical and physical factors and are greatly
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Enzymes are responsible for multiple reactions that take place naturally in the living organisms. The purpose of the enzymes lab was to investigate how the enzymes play a role in a reaction‚ affecting the rate of reaction (ROR). Interestingly‚ we tested how the enzymes affect the reaction rate at multiple temperatures (0‚ 23‚ 37‚ 50‚ 70‚ and 95 C). It was predicted that an increase in temperature will elevate the thermal activity of substrate which increases the chances the substrate molecules will
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The bonding of an enzyme to its substrate forms an enzyme-substrate complex. The catalytic action of the enzyme converts its substrate into the product or products of the reaction. Each reaction is extremely specific‚ distinguishing between closely related compounds‚ including isomers. For example‚ the enzyme sucrase will only act on sucrose and will not bind to any other disaccharide. The molecular recognition of enzymes is due to the fact that they are proteins‚ which are defined as being macromolecules
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FUNCTIONS OF ENZYMES Enzymes are extremely important to the human body and its ability to function. An enzyme itself is a protein made by the body’s cells to act as catalyst‚ speeding up chemical reactions in the cell. It does this by taking the reactants‚ or the elements or compounds that enter into the chemical reaction‚ in this situation referred to as substrates‚ and breaking apart their bonds so that new ones can form. The three types of enzymes are digestive enzymes‚ food enzymes‚ and metabolic
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The respiratory system is a vital factor of gas exchange due to its structures. The structure provides an efficiency to the process. Gas exchange requires an efficient system because it is a process through which blood circulates around the body‚ collects oxygen‚ delivers the oxygen to the organs that require it and releases carbon dioxide. oxygen and carbon dioxide enter and exit the body in opposite directions across a respiratory surface area that supplies enough oxygen to allow the process to
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Lambda DNA with restriction enzymes. Aim: The objectives of this experiment are: Become more familiar with using micropipettes. Use restriction enzymes to cut DNA at specific sites. Use Ligase to rejoin some of the cut/separated DNA fragments. Learn to separate DNA using electrophoresis. Introduction: Restriction enzymes are proteins which cut dsDNA at specific regions depending on the enzyme used‚ determined by the nucleotide sequence of the DNA‚ i.e. each enzyme recognises specific nucleic
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uses for fuel include everyday uses in our homes‚ running vehicles‚ and the use in manufacturing plants and other businesses that run on fuel. BMI oil and gas forecasts have been extended to cover a 10-year period‚ providing a guide to likely supply and demand trends from 2008 to 2018 (Oil & Gas Outlook: Long-Term Forcasts‚ 2009). Gas demands have been rising because environmental concerns have caused fuel to be the choice for power in many parts of the world. It is suggested that the fuel
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Table tennis is a sport in which two or four players hit a lightweight ball back and forth using table tennis rackets. The game takes place on a hard table divided by a net. Except for the initial serve‚ players must allow a ball played toward them only one bounce on their side of the table and must return it so that it bounces on the opposite side. Points are scored when a player fails to return the ball within the rules. Play is fast and demands quick reactions. Spinning the ball alters its trajectory
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Energy Balances‚ Numerical Methods Design Project Production of Acetone Process Description Figure I is a preliminary process flow diagram (PFD) for the acetone production process. The raw material is isopropanol. The isopropanol (lPA) feed is a near azeotropic mixture with water at BB wt yo IPA at 25"C and I atm. The feed is heated‚ vaporized‚ and superheated in a heat exchanger (E-401)‚ and it is then sent to the reactor (R-401) in which acetone is formed. The reaction that occlrrs is shown
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Volume (CM3) Diameter (CM) Radius (CM) M&M’S® Thickness (CM) 1 75 108 54 0.743 2 83 120 60 0.658 Table 2 – Direct Measurement Trial M&M’S® Thickness (CM) 1 0.642 2 0.741 3 0.683 Table 3 – Calculated Averages Method Calculated Average Thickness (CM) Indirect (from Table 1) 0.701 Direct (from Table 2) 0.689 Questions: 1. When you performed Step 2 of the procedure‚ you actually made a cylinder of M&M’S®. The cylinder was rather "smushed‚" and the
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