blue-black when starch and enzyme solutions are added because the enzyme didn’t digest the starch. However‚ if the optimum pH is added 1 " H o w A m y l a s e Wo r k s . " L e s s o n S n i p s . L e s s o n S n i p s ‚ n . d . We b . 1 0 J a n 2 0 1 1 . < h t t p : / / w w w. l e s s o n s n i p s . c o m / d o c s / p d f / a m y l a s e w o r k . p d f > . 2 Senese‚ Fred. "How does starch indicate iodine?."General
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City University of Hong Kong Dept. of Physics & Materials Science AP2104 Mechanics of Solids Laboratory Manual Experiment 1 Pure Bending of a Beam Experiment 2 Torsional Deformations Experiment 3 Yield Criteria for Ductile Materials under Plane Stresses Experiment 1 Pure Bending of a Beam Objective 1. To examine the stresses at various positions of the beam under a constant load of pure bending. 2. To determine the curvature of deflection of the beam. Introduction
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Experiment Title: Torsion Vibration. Introduction : Torsion is the twisting of a metallic rod shaped object‚ when a torque is applied on two sides’ perpendicular to the radius of a uniform cross-sectional bar. Objective : Determining the natural frequency of a system undergoing tortional vibration. Theory : Using Newton’s second law of tortional system. ( [pic] …………………. ( Equation 1 ) where Io = mass moment of inertia of the disk Hence‚ [pic] ……..……
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Abstract: This report presents the reason why the ocean does not freeze in the winter. Since the ocean consists of salt water‚ an experiment was done to test the effect of freezing on salt water compared to pure water. The experiment was conducted three times in order to obtain accurate results and eliminate errors. In addition to the salt and pure water experiment‚ a variation of this experiment was created to test other options. In the variation experiment the effect of freezing on sugar water
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Engineering Laboratory (Lab) Report Department of Engineering Faculty of Engineering and Science‚ University Tunku Abdul Rahman (UTAR) 1. Introduction Laboratory (Lab) reports are the most frequent document written by engineering student. These reports can contribute a significant amount of marks and yet little time or attention is devoted in understanding on how to write them well. The aim of this document is to provide a general guideline on writing a lab report. A lab report should not be
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ABSTRACT: The lab of one dimensional motion is a series of experiments that deal with different types of motion in a single direction. In the first experiment‚ one dimensional motion of a small cart on an air track is measured in a one photogate system. The acceleration was calculated by the infrared light emitting electrode of the photogate sensing the slacks on the picket fence. The calculation for gravity yielded 9.63 m/s^2‚ which is consistent with the accepted value of 9.8m/s^2. In the second
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pleiotropy is the single gene controlling or influencing multiple (and possibly unrelated) phenotypic traits. Mutation in this type of gene will simultaneously affect more than one trait. An example is phenylketonuria‚ a human disease caused by mutation(s) in a single gene that codes for the enzyme‚ phenylalanine hydroxylase. The disease is characterized by mental retardation and reduced hair and skin pigmentation. List and explain other factors that
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photochemical change. The light required for a photochemical reaction may come from many sources. Giacomo Ciamician‚ regarded as the "father of organic photochemistry"‚ used sunlight for much of his research at the University of Bologna in the early 1900’s. One of the oldest and most studied photochemical reactions is the photoreduction of benzophenone (diphenyl ketone). It was discovered that solutions of benzophenone are unstable to light when certain solvents
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INTRODUCTION There are many reasons for knowing the identity of microorganisms. The reasons range from the knowing the causative agent of a disease to knowing the correct microorganism in order to make antibiotics. This study was done by applying the following methods; OF Glucose‚ Indole Production‚ and Malonate Utilization test for the identification of an unknown bacterium. The methods will assist in determining the unknown bacterium found in a 55 year old male that was passing blood and mucous
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The lesson is divided into 3 labs that can be completed in any order. After labs have been completed‚ facilitate a class discussion where students summarize and compare findings and relate how their findings support (or refute) Newton’s Laws of Motion LAB 1: How fast can it go? Put one car at the top of the ramp and let it roll down. Use a stopwatch to record the time the car rolled. Use this information to calculate the acceleration of the car. Measure the distance the car rolled using the
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