different pH solutions as well as to measure the absorbance of catecholase in solutions with different concentrations of potato juice and phosphate buffers. Absorbance of the enzyme catecholase was at an optimum level when pH was close to neutral. When pH was acidic or basic‚ the catecholase was less effective. Also‚ when there was a higher concentration of potato juice and a lower concentration of phosphate buffer‚ absorbance of the enzyme increased. Introduction According to Edmund J. Stellwag
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Biology Investigation: Effect of different concentrations of sucrose solutions on the mass of potatoes Research question Is the mass of potatoes going to be smaller or bigger in different sucrose concentration? Introduction Osmosis is a process that occurs at a cellular level that entails the spontaneous net movement of water through a semi-permeable membrane from a region of low solute concentration to an area of high solute concentration in order to equalize the level of water
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40(2): 13-20: April-June‚ 2003 Electronic Seed Tube Blockage Detector for Tractor Drawn Seed Drill AK Rail‚ K Sivadasan 2 and SN Murty3 ABSTRACT Tractor driven seed drills are extensively used for sowing seeds. Choking of lower end of tubes in seed drills is a comJIlon problem while sowing. To detect the choking of tubes/ channels instantaneously‚ a multichannel electronic seed tube blockage detector for tractor drawn seeddrills (ESTBDTDS) has been designed and developed. The Opto-electronic
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Research project #2 Test Tube Meat Scientists have recently traveled to the Netherlands to check out different laboratories researching test tube meat. This is a recent study and may seem far-fetched but we could be eating this meat in the next couple of years. With a new study like this there will be many controversial Pros and Cons. The two articles I researched online were; Burgers From A Lab: The World Of In Vitro Meat and the other is from Beefmagazine.com: Test Tube Meat. Both of the articles
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advancement in the field of medicine has been used recently which helps childless couple to have their biological child. This advancement includes what the people call in vitro fertilization which results to what is commonly known as the test tube baby. In Vitro Fertilization (IVF) is the most common among the high-tech fertility treatments. It can help the woman conceive if she has ovulatory problems‚ if they have problems in the fallopian tubes‚ if their partner has low sperm count‚ or other fertility
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The Dachau Concentration Camp was the first camp established in March 1933.It became the first concentration camp made by the Nazis. It was placed by a munitions factory by the city Dachau. It is nearly 10 miles from Munich‚ Germany. In the first year there were 4‚800 prisoners. The first prisoners were German Communists‚ Social Democrats‚ Trade Unionists‚ and other opponents of the Nazis. During 1937 the SS made the prisoners construct a large group of buildings on the grounds of
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Discussion: Shown in tables 1 and 2‚ the shoot heights‚ on average‚ of the barley seeds‚ increased as the Aquasol concentration increased. This is with the exception of the solution with an initial Aquasol concentration of 0.40% in Table 1‚ which showed to have‚ on average‚ shorter shoot heights in comparison to the solution with 0.25% Aquasol. Ultimately‚ this indicates that the experiment had random and systematic errors that affected the accuracy‚ reliability‚ validity‚ and precision of the results
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The Spectrophotometer Determination Of Protein Concentrations And The Effects Sodium Dodecyl Sulphate And Triton X-100 Have On Protein Concentration. INTRODUCTION Spectroscopy is used as a collective term for all the analytical techniques based on the interaction of light and matter. Spectrophotometry is one of the branches of spectroscopy where we measure the absorption of light by molecules that are in a gas or vapour state or dissolved molecules/ions (Tombs‚ et.al‚ 1959). Spectroscopy is the
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Total CO2 Evolved by Different Concentrations of Convollaria roots. Actual values are the graduated pipette readings. For CO2 evolved values‚ subtract the initial reading from the actual reading. This is the amount of CO2 accumulated over time. | Time (min) | Tube 1 | Tube 2 | Tube 3 | Tube 4 | | Actual | CO2 Evolved | Actual | CO2 Evolved | Actual | CO2 Evolved | Actual | CO2 Evolved | | (A) | (A-I) | (A) | (A-I) | (A) | (A-I) | (A) | (A-I) | Initial reading (I) | 0.05 | | 0
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Unit 4 Lab – Effects of Osmosis on Living Tissue Assignment Total: 35 Points Course Weight: 6 Pre-Lab Preparation - Review the following resources to complete this assignment: Textbook: Chapter 5‚ pg. 83-86 Mastering Biology / Study Area / Chapter 05 – The Working Cell / Student Home Key Concepts Video: Plasmolysis Video: Turgid Elodea Activity: Membrane Structure Activity: Diffusion Activity: Osmosis and Water Balance in Cells Bioflix: Membrane Transport Additional Resources Blast Animation: Diffusion
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