will decrease. Each enzyme functions at an optimum pH. Well according to the graph‚ you see that the enzyme did not function at all when boiled which can be explained by the fact that it got denatured. Denaturing means the secondary and tertiary structure of the enzyme does get disrupted so bonds would definitely be broken. What seemed to be the optimum temperature and pH for the enzyme? In other words‚ at what temperature and pH was the rate of reaction fastest? How did you determine
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Respiratory Acidosis and Alkalosis Activity 1: Normal Breathing 1. At 20 seconds‚ pH = 7.4 2. At 40 seconds‚ pH = 7.4 3. At 60 seconds‚ pH = 7.4 4. Did the pH level of the blood change at all during normal breathing? If so‚ how? No‚ the pH level of the blood did not change during normal breathing. 5. Was the pH level always within the “normal” range for the human body? Yes‚ the pH level was always within the normal range for human body. 6. Did the PCO2 level change during the course of normal
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(D1) pH is measured based on its acidity and alkalinity. There are many substances around the body that have different pH values. A pH of 7 is usually considered neutral‚ neither acid nor alkaline‚ this is the pH of water. In the body the acids and bases need to be in very close balance‚ this is called ‘acid base homeostasis. If it goes off too far in either direction then it could be fatal to the body. For example in the body the blood has a pH value of around 7.35 to 7.45‚ if the bloods pH value
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At 20 seconds‚ pH = 7.40 2. At 40 seconds‚ pH = 7.39 3. At 60 seconds‚ pH = 7.38 4. Did the pH level of the blood change at all during normal breathing? If so‚ how? yes‚ it went down by .01 pH 5. Was the pH level always within the “normal” range for the human body? 7.35-7.45 6. Did the PCO2 level change during the course of normal breathing? If so‚ how? No Activity 2a: Hyperventilation – Run 1 1. At 20 seconds‚ pH = 7.48 2. At 40 seconds‚ pH = 7.56 3. At
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Acids Bases and pH Scale I. Acids *Acids are ionic compounds ( a compound with a positive or negative charge) that break apart in water to form a hydrogen ion (H+). *The strength of an acid is based on the concentration of H+ ions in the solution. The more H+ the stronger the acid. Example: HCl (Hydrochloric acid) in water Characteristics of Acids: **Acids taste sour **Acids react strongly with metals (Zn + HCl) **Strong Acids are dangerous and can burn your skin
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Hydrometallurgy 104 (2010) 459–464 Contents lists available at ScienceDirect Hydrometallurgy j o u r n a l h o m e p a g e : w w w. e l s ev i e r. c o m / l o c a t e / h yd r o m e t Biokinetic test for the characterisation of AMD generation potential of sulfide mineral wastes A.H. Hesketh a‚b‚ J.L Broadhurst b‚ C.G Bryan a‚ R.P van Hille a‚ S.T.L. Harrison a‚b‚⁎ a b Centre for Bioprocess Engineering Research‚ Department of Chemical Engineering‚ University of Cape Town‚ Private
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acid-base titration can be detected by the use of a pH indicator‚ a pH meter‚ or a conductance meter. The use of a pH meter to quantitatively determine the end point of a titration reaction is preferred to the use of visual indicator. This is because the pH meter monitors the change in pH at the equivalence point rather than just observing the color change in the visual indicator‚ and this eliminates the indicator blank errors. The use of a pH indicator is often regarded as tedious as compared to
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and base properties of the antimicrobial agent sodium benzoate. Theory Sodium has mainly been used in food processing to avoid growth of bacteria and harmful microorganisms. It is commonly used to preserve foods and beverages that have an acidic pH. Rather than benzoic acid‚ sodium benzoate is used because it is generally soluble in most aqueous solutions but benzoic acid is not. Reaction Sodium benzoate mixed with water‚ dissociates into benzoate and sodium ions. Hydrogen chloride
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LAB 6. ACIDS AND BASES: PH AND BUFFERS PURPOSE: To determine the pH of common acids and bases using a pH meter‚ pH paper‚ and red cabbage indicator. To test the effect of adding an acid or base to a buffer solution. SAFETY CONCERNS: Always wear safety goggles. Wash with soap and water if skin contacts acids or bases. ACIDS: An Acid is a substance that when dissolved in water will produce hydrogen ions‚ H+‚ in the solution. An acid that does not contain carbon is called an inorganic
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Research Question How will the addition of different pH buffers to amylase affect the rate of starch digestion measured using starch and iodine? Introduction Amylase is an enzyme found in human saliva and pancreas. It is the digestive enzyme that is needed to breakdown starch molecules. Amylase must be kept at certain conditions to function at its optimum level. This experiment will explore the effect of pH (1‚ 4‚ 7‚ 10‚ and 14) on the function of amylase by using starch and iodine. Usually
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