was liquid spinach. Each team added HCl and NaOH to their homogenate. As we found out in our experiment‚ HCl was an acid so when added to the liquid spinach the pH lowered and NaOH‚ being a base‚ rose the pH level when added. The better the buffer the homogenate is‚ the less its pH changes
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Effects of Temperature on the Formation of Cheese Curds This lab was performed in order to find what temperature the enzyme chymosin is most effective at forming cheese curds. An enzyme is a protein that acts as a catalyst to speed up biological reactions in cells. They work by lowering the activation energy and help to orient the molecules correctly. Chymosin was originally taken from the stomachs of calves‚ and was called rennet‚ and then purified to make rennin. Eventually to catch up with
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Homeostasis Lab: The Effects of Exercise on Homeostasis Purpose: To discover the effect that various levels of exercise have on specific body parameters. Hypothesis: If a subject walks up and down a flight of stairs for eight minutes‚ then they start to sweat more‚ their heart rate‚ body temperature‚ and breathing rate will increase‚ and there will be a change in their skin color on their arms and face‚ because the body will be trying to maintain homeostasis. Materials: You will
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management systems offer total inventory control. With these systems and the modular functionality of the Servo gauges‚ you are provided with on-line information including: • • • • • • • Accurate liquid levels Accurate interface levels Accurate product and vapor temperature Volume Mass Temperature and density profiles Alarms All measured and calculated data and parameters are available for higher level systems (DCS‚ MIS‚ etc.) via an extended number of communication protocols. Outstanding Accuracy
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Botany Lab ------------------------------------------------- Introduction This study observed the effects of different body fluids and solutions relative to breaking down bacteria‚ specifically in the human body. The enzymes we studied‚ lysozomes‚ help the body lyse‚ or break down bacteria by targeting peptidoglycan in bacterial walls. The solutions and fluids studied were saliva‚ mucus‚ tears‚ a stock solution of lysozomes‚ and distilled water. The solutions were placed in agar containing Micrococcus
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Introduction: Mitosis occurs in all eukaryotic cell tissues and produces genetically identical daughter cells with a complete set of chromosomes. In humans‚ mitosis produces somatic cells that are diploid‚ which means they contain two non-identical copies of each of the twenty-three chromosomes. One copy is derived from the person’s mother and the other from the person’s father. Meiosis‚ on the other hand‚ occurs only in testis and ovary tissues‚ producing sperm and ova (eggs). The gametes that
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absorbed when one mole of the substance dissolves in a large excess of water. It is expressed in kJ/mol. * The specific heat of water is a constant‚ with a value of 4.18 J/ g*oC. AIM: To determine the molar heat of solution for two different solids Equipment: * A calorimeter (made using 2 Styrofoam cups with a cardboard lid) * Electronic balance * Measuring cylinder * Thermometer * Ammonium nitrate (NH4NO3) * Sodium carbonate (Na2CO3) * Stirrer/Straw Risk assessment
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Copper Cycle Summary During the copper cycle lab‚ my partners and I performed a series of reactions on copper powder and observed the changes it underwent. For the first step‚ we mixed nitric acid and copper powder‚ and noticed that a yellowish brown gas emerged‚ along with effervescence. The red solid disappeared and became a blue liquid. We know that we produced copper nitrate‚ nitrate gas‚ and water because the only two blue solutions in “A New Language” are copper sulfate and copper nitrate
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Laszlo Vass‚ Ed.D. Version 42-0027-00-01 Lab Report Assistant This document is not meant to be a substitute for a formal laboratory report. The Lab Report Assistant is simply a summary of the experiment’s questions‚ diagrams if needed‚ and data tables that should be addressed in a formal lab report. The intent is to facilitate students’ writing of lab reports by providing this information in an editable
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(II) Sulfate Wash Bottle Lab Apron 2 Iron Nail Stirring Rod Plastic Gloves 1M Hydrochloric Acid Crucible Tongs Sandpaper or Emery Cloth Distilled Water Centigram Balance Face Shield Drying Oven 1. Find the mass of a clean‚ empty‚ dry 250-mL beaker. Record the mass to the nearest 0.01 g. 2. Add approximately 8 g of copper (II) sulfate crystals to the beaker. Find the mass and record it on the Report Sheet. 3. Add 50 mL of distilled water
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