The Effect of pH on Enzymatic Reaction Rate Abstract Enzymes are affected by changes in pH. The most favorable pH value— the point where the enzyme is most active—is known as the optimum pH. This experiment was conducted to determine the effect of pH reaction rate on an enzyme‚ catalase‚ from yeast. The experimental results indicate that the catalase worked best at a neutral pH level of seven (7). Introduction An enzyme is a protein molecule that serves as a catalyst. “The basic function of
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Bowens Reaction Series Mineral occurrence in igneous rock is most simply explained by Bowen’s reaction series. Norman Levi Bowen discovered the series of reactions while studying the process of crystallizing minerals in Washington‚ D.C. in 1928. In order to best express his findings to his scientific brethren‚ Bowen created a visual display based on when and under what conditions each silicate mineral crystallized. This is extremely important to geologists because it helps them to easily understand
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Virtual Lab: Enzyme Controlled Reactions Worksheet 1. Which of the following does NOT apply to an enzyme: Inorganic 2. When an enzyme catalyzes a reaction: Substrate(s) bind in the active site 3. Which of the following would interfere most with the ability of an enzyme to catalyze a reaction? Reduced concentration of substrate available 4. Feedback mechanisms regulate the rate of enzyme activity‚ effectively “turning off” an enzyme
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Dystonic Reaction Dystonia is a condition that makes your muscles contract without warning (muscle spasms). It can cause unwanted jerking of muscle groups that can be uncomfortable. This condition is rarely life threatening. CAUSES A dystonic reaction is most often a side effect to a particular medicine. These reactions occur when the normal patterns of the nerve receptors are upset by a particular medicine and the imbalance causes multiple types of muscle spasm. This condition may also be caused
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SIMPLE REACTION TIME Objective To acquaint the students in reading laboratory primers and organize data into summaries and graphs. Introduction Apparatus Required Stopwatch‚ Meter Stick. Procedure Part – I Select your laboratory partner and toss a coin to determine who will be E and S. S holds the timer with preferred time. At E’s go signal‚ S starts the timer and must talk of free associate while making an estimate of 12 second interval. E records the estimate in Table I. S should not see the face
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ADVERSE DRUG REACTIONS Lecture by Dr.Shehla Shaheen Adverse effect is a harmful and undesired effect resulting from the administration of a therapeutic dose of a drug. OTHER WORDS USED SYNONYMOUSLY; SIDE EFFECTS TOXIC EFFECTS HARMFUL EFFECTS UNDESIRABLE EFFECTS All drugs can produce harmful as well as beneficial effects. ADRs are either related or unrelated to the principal pharmacological actions of the drugs Adverse effects are of great concern to drug regulatory authorities.
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Introduction Nivaldo J. Tro describes kinetics as the study of how changes that occur in chemical reactions take place over time‚ and because of its vast utilization in a multitude of industries‚ it may be one of the most significant and fascinating aspects in the entire chemical world. One application of the study of kinetics can be applied to the determination of the rate of a chemical reaction involving a certain selection of chemicals (FD&C Blue #1 and sodium hypochlorite). The purpose of the
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Rates of Reaction Investigation Introduction In this investigation I am going to be investigating the reaction between marble chips and hydrochloric acid‚ and to see what differences in the rate of this reaction arise when different concentrations of acid are used. Below is the word equation for this reaction: Calcium Carbonate + Hydrochloric Acid = Calcium Chloride + Carbon Dioxide + Water Below is the fully balanced chemical equation for this reaction. CaCo3 + HCl  CaCl2 + CO2
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is being released or absorbed in a chemical reaction. My lab partner and I had to determine the heat exchanged when solid magnesium hydroxide is mixed with solid citric acid‚ using a coffee cup calorimeter. Given that citric acid is soluble in water is the property that makes this reaction possible. The first law of thermodynamics and Hess’s law are also present within this experiment. Knowing the difference between endothermic and exothermic reactions is also relevant. If the temperature goes down
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entering World War II‚ until the bombing of Pearl Harbor. Government funded atomic weaponry research had begun not long before the attack‚ and this has led people to believe that the Manhattan Project‚ a descendent of the program‚ was a knee-jerk reaction to the bombing. According to writer Brenda Wilmoth Lerner in her article on the Manhattan Project for the Encyclopedia of Espionage‚ Intelligence‚ and Security‚ Roosevelt ordered‚ in December of 1941‚ that research was to begin regarding the plausibility
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