The Onion Cell Lab Background: Onion tissue provides excellent cells to study under the microscope. The main cell structures are easy to see when viewed with the microscope at medium power. For example‚ you will observe a large circular nucleus in each cell‚ which contains the genetic material for the cell. In each nucleus‚ are round bodies called nucleoli. The nucleolus is an organelle‚ which synthesizes small bodies called ribosomes. Ribosomes are so small you cannot see them with the light microscope
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Introduction The purpose of this project was to detect which organism we had in our unknown mixed culture tube by running a series of experiments to detect which specific Gram negative organism we had. To detect your gram positive from the mixed culture was given as extra credit points also. A Gram stain was performed and isolation streak plate in order to isolate and observe the unknown organism. Before the series of test‚ a dichotomous key had to be written up in order to know what steps
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Observations: When Malaria is present and infects red blood cells‚ parasites can infect cells carrying defective hemoglobin which may result in death. Allele frequency changes over time depending on the pressures or circumstances facing a particular population. African populations are especially impacted by both malaria and sickle cell anemia. Depending on the impacted population‚ allele frequency often shifts and well suited organisms are likely to survive and allele frequencies can increase
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Cell Size: Is Bigger Better? Problem: Why are cells small? Objective: To see the relationship between cell size and diffusion of materials. Hypothesis: If we cut three different sizes of cells‚ then the smallest one will survive the longest due to its sufficient permeable membrane. Cube | Total Volume (cm^3) | Surface Area (cm^2) | Index SA/VOL | 3 | 27 | 54 | .5 | 2 | 8 | 24 | .33 | 1 | 1 | 6 | .16 | Index of Cubes Cube Index SA/VOL Surface Area to Volume Cube | Total
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SAMPLE DESCRIPTIVE LAB REPORT Examination of Protozoan Cultures to Determine Cellular Structure and Motion Pattern Abstract Protozoans are unicellular eukaryotes with either plant- or animal-like characteristics. Through careful observation‚ we analyzed various protozoan cultures in order to identify characteristics associated with cell structure and movement of these one-celled organisms. We found that Protists exhibit certain characteristics that allow them to be categorized into different groups
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Beet Cell Lab Purpose: The purpose of this Lab was to see how much pressure or stress the beet tissue would hold. Hypothesis: I hypothesize that the higher % of the solvent that the higher the colour intensity will be shown on the ph colour scale. The lower the solvent then the less colour shown. Materials: *Test Tubes (4) *Cork Borer *Beets *Water *1% Acetone *50% Acetone *1% Methanol *50% Methanol Procedure: *Cut 4 uniform cylinders of beet using a cork borer with a 5-mm
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Microbiology Laboratory Report Identification of Unknown Bacteria 03/10/05- 04/01/05 Authors: Richard Hendricks‚ Jessica Prebish; NMU Abstract: Broth culture 16 was randomly selected by our group and subjected to qualitative tests for taxonomic identification. The culture did appear homogenous throughout the testing period and is currently retained by Northern Michigan University’s department of Microbiology. We suggest that culture 16 is an example of Escherichia coli. Background: Techniques
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LAB REPORT NUMBER TWO DATE: 3/25/2010 inal attachment Lab Experiment number 11 PURPOSE: To learn the Gram stain technique‚ the reason for the stain‚ and how to identify the results of the organisms stained. MATERIALS: Bunsen burner‚ inoculating loop‚ staining tray‚ glass slides‚ bibulous paper‚ lens paper‚ oil‚ and microscope METHODS: Apply Crystal Violet (Primary stain) for 1 minute. Rinse with D-water Apply Iodine (Mordant) for 1 minute. Rinse with D-water. Apply Alcohol (Decolorize) for
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Stem Cell Culture Human embryonic stem cells are pluripotent stem cells derived from the inner cell mass of the blastocyst‚ an early-stage embryo. To culture these stem cells under controlled environments‚ one first must have a growth medium. This growth medium is made with DMEM/F12‚ which is cell culture medium‚ a 20 percent Knockout Serum Replacement‚ 100 μM β-Mercaptoethanol‚ 1 percent non-essential Amino Acid‚ and a Basic Fibroblast Growth Factor. This medium is then changed out everyday
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Mammalian Cell Culture Lab Manual Student guide of Cell Biology Laboratory Techniques 2012 Jay M. Feldman Cell Biology Professor Lagier 11/26/2012 Mammalian Cell Culture Lab Manual Student guide of Cell Biology Laboratory Techniques 2012 Jay M. Feldman Cell Biology Professor Lagier 11/26/2012 Table of Contents I. Introduction * About the author page 2 * Preface page 3 II. Laboratory Techniques * Cell Culture Technique page 4-5 * Sterile Technique
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