Optimization and validation of analytical methods in the determination of acrylamide levels of potato chips by LC-MS/MS as a simple and sensitive method was carried out in order to do the testing and monitoring of acrylamide in potato chips on the market in Indonesia. In this research‚ the method development was done by using cation exchange solid phase extraction‚ repeated extraction with 10 mM formic acid solution and precipitation at low temperature by centrifugation. The utilise of C-18 reversed-phase
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Name: Leslie Estrada Exercise 1: Cell Transport Mechanisms and Permeability: Activity 1: Simulating Dialysis (Simple Diffusion) Lab Report Pre-lab Quiz Results You scored 100% by answering 4 out of 4 questions correctly. 1. The driving force for diffusion is You correctly answered: b. the kinetic energy of the molecules in motion. 2. In diffusion‚ molecules move You correctly answered: a. from high concentration to low concentration. 3. Which of the following dialysis membranes has the largest
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Introduction: Predation is an interaction between two species in which one of them uses the other species as food. The Great Blue Heron is a majestic sight‚ which has subtle blue-gray plumage and lives in aquatic habitats. It often stands as it scans for prey or wades really slowly‚ but then‚ they can be as fast as a lightning to grab their food(fish‚ frogs‚ salamanders‚ lizarts‚ small snakes‚ and dragonflies). In this lab‚ we are going to model predation and the effects of changes in the environment
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Exercise 1: Cell Transport Mechanisms and Permeability: Activity 1: Simulating Dialysis (Simple Diffusion) Lab Report Pre-lab Quiz Results You have not completed the Pre-lab Quiz. 09/20/11 page 1 Experiment Results Predict Question: Predict Question 1: The molecular weight of urea is 60.07. Do you think urea will diffuse through the 20 MWCO membrane? Your answer : c. No‚ not at all. Predict Question 2: Recall that glucose is a monosaccharide‚ albumin is a protein with 607 amino acids‚ and
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Answers to Questions Activity 1: Simulating Dialysis (Simple Diffusion) (pp. 2–4) 9. All solutes except albumin are able to diffuse into the right beaker. Using distilled water in the right beaker and either the 100 MWCO or 200 MWCO membrane will remove urea from the left beaker and leave albumin If the left beaker contains NaCl‚ urea‚ and albumin‚ you can selectively remove urea by dispensing a concentration of NaCl into the right beaker equivalent to that in the left beaker and by using
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DIY Duct Tape Bow Have you ever wanted to use a hair bow but never had the time to go out and buy one? No worries‚ because there is an easy and affordable way to make stylish and easy duct tape bows at home! Duct Tape Bows are fast‚ easy‚ and affordable! All you need are some few household items such as a duct tape of your choice‚ a ruler‚ scissors or an exacto knife‚ and a rubber band or bobby pin. Be sure that you have a flat desk area or table to perform this DIY craft. First off you need to
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Abstract: Water potential is the measure of free energy of water in a solution. The purpose of this lab was to find the water potential of a potato cell. The problem of this lab was‚ if there was a high molarity of solute‚ would it have a positive or negative water potential? The hypothesis of the experiment was‚ if there is a high molarity of solute then the water potential would be lower or negative. After obtaining potatoes‚ we cut them into pieces‚ weighed them‚ and then placed them in a solution
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ROLL 9 ISLOM JALOLOV 12/21/2011 LAB REPORT ROLL 9 ISLOM JALOLOV EGG LAB REPORT PURPOSE: WHICH IS MORE PERMEABLE SALT WATER‚ VINEGAR‚ OR CORN SYRUP APPARATUS: STRING‚ RULER‚ E-BALANCE‚ 250 ML BEAKERS‚ PEN MATERIALS: EGG‚ WATER‚ SALTY WATER‚ CORN SYRUP‚ VINEGAR INTRODUCTION: I AM DOING A LAB REPORT ABOUT EGGS‚ I’M USING SALTY WATER‚ VINEGAR‚ CORN SYRUP‚ AND I AM GOING TO TRY TO FIGURE OUT WHICH IS MORE PERMEABLE THAN ALL. REALISTIC STATEMENT: YES MY RESULTS ARE REALISTIC PROCEDURE:
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a) The table above helps us to understand why larger organisms need to become multicellular rather than just increase the size of their cells. The information in the table shows that as an organism gets larger in size‚ its surface area to volume ratio will decrease. However‚ the smaller the organism is‚ the greater its surface area to volume ratio will be. A small uncellular organism would have a large surface area in which diffusion (the movement of molecules) can take place. Diffusion is essential
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The first lab will investigate the movement of glucose and starch across a selectively permeable membrane through a process of diffusion. The movement of a solute through this membrane is called dialysis . Diffusion is a form of passive transport. It is the movement of molecules from areas of higher concentration to those of lower concentration‚ until there is an even concentration. This movement is random because it is a result of kinetic energy. Diffusion is a slow process‚ but there are many factors
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