to study the impact of Aspergillus flavus on groundnut seeds was conducted in the laboratory using the blotter method. Groundnut seeds sample from Mutsamba were provided and four petri dishes were prepared containing each ten seeds placed on two to three sheets of wet (but not dripping with water) blotter papers. The petri dishes were incubated in the laboratory for two weeks. The results had shown that Aspergillus flavus was the seed borne fungi detected affecting the germination of seeds with 23
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the slaters and their responses Equipment: * 3 Petri Dishes * Craft Knife * Masking Tape * Blu-Tac * Silica Gel Packets * Cotton Wool * 15 Slaters * Stopwatch/Timing Device * Pen & Paper Final Method: (Experiment conducted in a room with constant light source and temperature) 1. Get 3 Petri Dishes, cut 2 holes in one and 1 hole in the others, make the hole about 1cm wide 2. 3 2 1 Tape Petri dishes together, aligning the holes so that you end
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We had one Petri dish that was our control, which was streaked with E.coli and was kept at normal room temperature and normal lighting. The second Petri dish was also streaked with E.coli and kept at room temperature and normal lighting, but six piles of salt were added to the Petri dish. The third Petri dish was also kept at room temperature and normal lighting, but a thin layer of coffee (contains caffeine)
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Introduction to the Chemical Analysis of Water Samples Each group will collect a fresh water sample from campus according to directions provided form your instructor or TA. You will learn how to use several pieces of equipment and several chemical kits in order to analyze the water sample. Each group may split up the tasks however it sees fit- however, each person in the group is expected to be able to complete any and all of the tests performed, with directions of course! Make sure that
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the ants on ice for a minute until they stopped moving. Then, we added the larvae and the workers to a dental stone nest. This dental stone nest consists of a petri dish filled with dental stone. Also, the dental stone nest had an embedded water reservoir containing a small hole that can be filled with water. For behavioral assays, the petri dish nest was covered with a solid lid to keep
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EURIDIS Research Monograph SCHEMATIC EVALUATION OF INTERNAL ACCOUNTING CONTROL SYSTEMS Kuo-Tay Chen* and Ronald M. Lee# * Department of Management Purdue University at Calumet Hammond, IN 46323 U.S.A. chenk@pucal.bitnet # Erasmus University Research Institute for Decision and Information Systems (EURIDIS) Erasmus University Rotterdam The Netherlands rlee@fac.fbk.eur.nl ERASMUS UNIVERSITY RESEARCH INSTITUTE FOR DECISION AND INFORMATION SYSTEMS Schematic Evaluation of Internal Accounting
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Growth of Microorganisms Culturing is the growing of micro-organisms in prepared media in the laboratory. The prepared medium is called the ‘culture medium’. Bacteria, fungi and algae grow easily in test-tubes, flasks or Petri dishes of culture media. Virus on the other hand, can only grow and multiply inside living cells, so they cannot be grown in a culture medium. Micro-organisms are able to increase in size and multiply in number of cells. The growth of micro-organisms is measured based on
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This lab was performed to test six different pen inks to determine if they are pure substances or mixtures. This lab also showed how to use chromatography to identify pure substances versus mixtures. By using a filter paper and a petri dish full of solvent, we were able to see the difference between how pure substances and mixtures separate. After performing this lab, it was concluded that three out of six of the pen inks used were pure substances, and the other three were mixtures
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Cellular Respiration Ben Gipson BIO 1400 Exercise 6.1 Alcoholic fermentation is a metabolic pathway used primarily by yeast and some bacteria. In fermentation, glucose is broken down into ethyl alcohol (ethanol) and carbon dioxide. In the process, some of the energy that had been stored in the glucose bonds is used to form high energy bonds in ATP. Name some factors that affect enzyme activity. Temperature, pH, enzyme concentration, substrate concentration Materials: yeast, test tubes,
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The -DNA plate and -DNA/+amp were control plates, no colonies were supposed to grow on these plates because of the -DNA, which occurred. The +DNA/+amp and +DNA/+amp/+IPTG plate were the experiment plates since it had +DNA instead of -DNA. Additionally, the cells on these two plates would transform and the plate would form colonies since they were the experiment plates. The purpose of incubating the cells in ice, then 42oC ice water, then back to ice was because to transform the cells and take in
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