Preview

Winogradsky Column Discription

Good Essays
Open Document
Open Document
1129 Words
Grammar
Grammar
Plagiarism
Plagiarism
Writing
Writing
Score
Score
Winogradsky Column Discription
Winogradsky column description
Introduction
The experiment of Winogradsky column is to observe microbiology interaction of microbes using pond mud. The aim of this paper is to describe structural and chemical features in Winogradsky column and to show the acknowledgement of microbial cells in Winogradsky column.

Materials of experiment
Pond mud
Calcium sulfate
Calcium carbonate
Shredded paper
Pond water
Cylinder
Aluminum foil

Methods 1. Prepare pond mud 2. Add calcium sulfate and calcium carbonate 3. Add piece of paper 4. Add pond water 5. Seal top of the column 6. Put beside window

Process (sequence of the reaction)
The less of oxygen makes oxygen enrichment at the top as well as anaerobic condition at the bottom (O2 gradient). Clostridium and other anaerobic bacteria dominate under anaerobic conditions at the bottom. Cellulose from the paper into glucose and that would be a trigger for the bacteria (Clostridium) to take in the glucose and partially break it down by fermentation to gain energy and to produce ethanol and organic acids as by-products.
The by-products from Clostridium feed into other bacteria nearby in the deep mud of the column. Desulfovibrio bacteria use these organic molecules as carbon sources. Desulfovibrio uses sulfate, rather than O2, as a final electron receptor in respiration, producing H2S. The activity of Desulfovibrio creates a gradient of H2S, with high H2S at the bottom, low at the top. H2S feeds into the metabolism of two types of photosynthetic bacteria: the green sulfur bacteria (e.g. Chlorobium) and the purple sulfur bacteria (e.g. Chromatium). These bacteria begin to proliferate as they use CO2 from calcium carbonate as a carbon source, H2S from Desulfovibrio as an electron donor, and light as the energy source needed produce organic molecules. (Perry, et al., 2002)
The green sulfur bacteria can tolerate higher concentrations of H2S than the purple sulfur bacteria can tolerate.



References: “Investigating Bacteria with the Winogradsky Column” Rogan, B., 2000  Perry, et al., 2002 Published by Sinauer Associates, Sinauer Associates and Sumanas, Inc.

You May Also Find These Documents Helpful

  • Satisfactory Essays

    In my test the s. epidermidis turned bright red indicating a positive result meaning that it produces a stable acid. The E.coli sample turned orange…

    • 220 Words
    • 1 Page
    Satisfactory Essays
  • Satisfactory Essays

    Photosynthesis Lab Report

    • 566 Words
    • 3 Pages

    Photosynthesis is a process to which some autotrophs such as plants produce their own food. It has two stages or reactions light-dependent and light-dependent reactions. The light dependent reactions are the first stage, where energy from sunlight is captures in Photosystem 2 and then 1, the electrons generated in Photosystem 1 then moves along the electron transport chain. The moving of electrons causes a hydrogen ion gradient that is used in the final step to produce ATP, by the ATP Synthase. The equation for this reaction is 6CO2 + 6H2O  C6H12O6+6O2 or, carbon dioxide +water sugars + oxygen . This reaction takes place on the thylakoid membrane of the chloroplast and uses energy from sunlight to produce compounds like ATP and NADPH. The second stage of photosynthesis is the Calvin Cycle, which takes place in the stoma of the chloroplast. This stage is light-independent or it does not need energy from sunlight. During this reaction ATP and NADPH from Stage 1are used to produce high energy sugars. The reaction is 3CO2 + 6NADPH + 5H2O + 9ATP  G3P + 2H+ + 6NADP+ + 9ADP + 8Pi . Additionally, the three limiting factors of photosynthesis are the light intensity, carbon dioxide concentration, and the temperature. Lastly, the items used in this particular experiment were baking soda to provide CO2, a light to excite the electrons in stage 1, distilled…

    • 566 Words
    • 3 Pages
    Satisfactory Essays
  • Good Essays

    Germinating Yeast Lab

    • 704 Words
    • 3 Pages

    Purpose: The purpose of this lab was to gain a complete understanding around the rate of cellular respiration within multicellular organisms, also to research and understand how to use a CO2. Background: Living systems require free energy and matter to maintain order, to reproduce, and grow. Energy deficiencies cause disruptions at the population and ecosystem levels as well. 1 mol of H2O produces 1 mol of CO2 through cellular respiration. Autotrophic organisms capture free energy from the environment through the process of photosynthesis and chemosynthesis.…

    • 704 Words
    • 3 Pages
    Good Essays
  • Good Essays

    Soil: I chose an area of soil outside of my apartment to do my soil sample. I noticed that there were a few prominent growth in this dish. The majority of them seemed to grow in a snowflake shape and were mainly white. Whether they were different types of microbes or just one, I am not sure. There was one growth that had a black center and a white border that was shaped like a snowflake.…

    • 1283 Words
    • 6 Pages
    Good Essays
  • Powerful Essays

    BIO20002 Prac Report 2 1

    • 915 Words
    • 8 Pages

    This experiment is aimed to examine the effects of environment such as Oxygen, Temperature, pH and Osmotic Limitations on the growth of a various kind of bacteria.…

    • 915 Words
    • 8 Pages
    Powerful Essays
  • Better Essays

    Unknown Lab Report

    • 1055 Words
    • 5 Pages

    | To determine if the microbe can ferment the carbohydrate (sugar) cellobiose as a carbon source.…

    • 1055 Words
    • 5 Pages
    Better Essays
  • Good Essays

    Streptpcoccus Faecalis

    • 321 Words
    • 2 Pages

    Cited: Bergey, D. H., J. G. Holt, et al, et al. Berge 'ys Manual of Determinative Bacteriology. 9. Philadelphia, PA: Lippincott Williams & Wilkins, 1994. 528-549. Print.…

    • 321 Words
    • 2 Pages
    Good Essays
  • Satisfactory Essays

    Chapter 2 Marine Biology

    • 1093 Words
    • 5 Pages

    34. Around black smokers, tube worms and other organisms rely on bacteria to do chemosynthesis using what gas as their energy source?…

    • 1093 Words
    • 5 Pages
    Satisfactory Essays
  • Good Essays

    2. Madigan, M.T., and J.M. Martinko. 2006. Brock biology of microorganisms. p. 707 and 781 11th ed. Prentice Hall, Upper Saddle River, NJ.…

    • 784 Words
    • 4 Pages
    Good Essays
  • Powerful Essays

    In todays world of ever evolving genetic mutations the incidence of drug resistant forms of microorganisms are on the rise. The importance of identifying these pathogens and their related epidemiology has become increasingly more important. The purpose of this study was to identify an unknown bacterium in a controlled laboratory environment over a 5 week period. Utilizing a variety of differential testing and staining methods learned in the microbiology course, students were to determine the identity of an assigned unknown organism. Observations were made and recorded each week to narrow down the scope of identification. Data has been presented in the tables, charts and drawings herein and reflect the results of microscopic observations as well as the differential tests results on various agars and broth cultures. Although all tests were not conclusive, the unknown organism labeled Unknown #11 was found to be a member of the family Enterobacteriacea and Genus Serratia marcescens.…

    • 1279 Words
    • 6 Pages
    Powerful Essays
  • Better Essays

    The purpose of the following study is to determine where the two unknown bacteria acquired in Microbiology lab should be classified in regards to temperature, pH level, and osmoregularity. It is important to classify bacteria in order to identify them. Identification of bacteria is important because they are not only useful but potentially dangerous as well. The identification of bacteria can lead to breakthroughs in healthcare regarding treatment of old and new diseases alike. Identifying bacteria can also be used in many other areas from better crop production through microbial pesticides to biological warfare. Their uses are endless as are their abilities to evolve and adapt to changing environments. That is why it is so important to be able to identify microorganisms. This study was conducted using techniques and experiments learned in microbiology lab that were used to classify the two unknown bacteria.…

    • 862 Words
    • 4 Pages
    Better Essays
  • Good Essays

    Unknown Bacteria

    • 2198 Words
    • 9 Pages

    Certain species of bacteria will produce hydrogen sulfide from the amino acid cysteine. This unknown species of bacteria tested positive for hydrogen sulfide production, indicating it is capable of catabolizing cysteine. This is important in certain environments when cysteine can be used as an energy source for respiration. Any bacteria that could not use cysteine as an energy source were eliminated.…

    • 2198 Words
    • 9 Pages
    Good Essays
  • Good Essays

    Unknown Bacteria Essay

    • 708 Words
    • 3 Pages

    Determination of oxygen requirements is a test to determine whether a microbe is an obligate aerobe, anaerobe, or facultative. The culture is put in a melted 5% glucose TSA. As the media cools it solidifies, oxygen is blocked out in the deeper area to create an anaerobic environment. The top and just below the surface has oxygen. The glucose is added to determine if the microbe can ferment glucose. This is shown as a positive if there are cracks or bubbles in the media.…

    • 708 Words
    • 3 Pages
    Good Essays
  • Good Essays

    Diego Rivera, an essay

    • 326 Words
    • 1 Page

    Diego Rivera México (1886-1957) Diego Rivera's art was one of the columns on which one of the strongest movements in American painting was to find support: Mexican muralism. His art rests on a foundation from a mixture of Gauguin, Aztec, and Mayan sculpture. Diego Rivera, used simplified forms and vivid colors. He brilliantly rescued the pre-Colombian past, as well as the cornerstones of Mexico's history: the land, the factory and land workers, the customs and the popular way of life.…

    • 326 Words
    • 1 Page
    Good Essays
  • Powerful Essays

    Microbial Fuel Cell

    • 1230 Words
    • 5 Pages

    At the anode, microbial respiration oxidizes available substrates to carbon dioxide results in liberation of electrons and protons. These electrons are transported out of the cell to the electrolytes via electrochemically active carriers, also known as…

    • 1230 Words
    • 5 Pages
    Powerful Essays