• Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month

The Effect of Indicators on the presence of Macromolecules in a McMush slurry

Extracts from this document...

Introduction

The Effect of Indicators on the presence of Macromolecules in a ?McMush? slurry 10 October, 2012 Rani Bhangu 1. The Effect of Indicators on the presence of macromolecules in a McMush 2. Design 1. Are carbohydrates, lipids, and proteins present in the McMush? 2. Introduction ?The organic compounds found in living organisms are lipids, carbohydrates, proteins, and nucleic acids. These macromolecules are large carbon-based structures. Common foods, which often consist of plant material or substances derived from animals, are combinations of these organic compounds. The macromolecules are assembled by joining several smaller units, called monomers, together through a chemical reaction called dehydration synthesis or condensation. The resulting polymer can be disassembled/ broken down into monomers through the complimentary process called hydrolysis? (Lazar, 1). Background Carbohydrates are made of carbon, hydrogen, and oxygen atoms (CHO). In the carbohydrate there are two hydrogen atoms for every one oxygen atom present. The monomers for carbohydrates are referred to as monosaccharides. When many monosaccharides are chained together the resulting molecule is called a polysaccharide. Carbohydrates are used by living organisms as an important source of energy. ...read more.

Middle

Proteins are made of unique combinations of the twenty amino acid monomers. A string of amino acid monomers joined together by peptide bonds is called a polypeptide? (Lazar, 1). Hypothesis: If the control is positive, then the results for McMush would be the same as the positive control, indicating it contains the specified macromolecule. 1. Variables 1. Independent variable- Type of indicator used 2. Dependent Variable- The presence of a macromolecule in the McMush 3. Controls- Water (in each trial) 1. Sugar solution in simple sugars 2. Cornstarch in polysaccharides 3. Oil for lipids 4. Gelatin solution for proteins 1. Materials (Lazar 3) . McDonald?s Happy Meal McMush slurry . Distilled water (dH2O) . Sugar Solution (glucose/fructose + dH2O) . Cornstarch solution (cornstarch + dH2O) . Gelatin solution (gelatin + dH2O) . Canola Oil . 6-8 test tubes and test tube rack . Masking tape/wax pencil . 10 mL graduated cylinder . Dropper pipettes . Hot water bath (600 mL Beaker filled with water and hot plate) . Beakers or plastic cups . Test tube clamps . ...read more.

Conclusion

Since the positive and negative results were previously told, students had the opportunity to practice skills of determining results from chemical reactions. For example, for proteins, students were told gelatin would turn a blue-violet color when reacted with Biuret?s reagent, and that this meant proteins were present in the substance. Students were then able to determine whether or not proteins were present in the McMush slurry; if the resulting color was similar to the gelatin solution that meant proteins were present. This same process was applied throughout the rest of the experiment, thus students were successfully able to practice their skills in determining chemical reactions in an experiment and which (if any) macromolecules are present. The data supports my hypothesis that the McMush results would be the same as the positive control, indicating it contains the specified macromolecule. Throughout all the experiments, water was the negative control. The other substance (gelatin solution, oil, etc.) were the positive controls. The McMush resulted in the same color after chemical reactions with the indicators as the positive substances? colors after the same chemical reaction. As seen in Table 4, the McMush resulted in the same blue-violet color as the gelatin solution did when chemically reacted with Biuret reagent. According to Madison.k.al12.us, my conclusions are accurate. ...read more.

The above preview is unformatted text

This student written piece of work is one of many that can be found in our International Baccalaureate Biology section.

Found what you're looking for?

  • Start learning 29% faster today
  • 150,000+ documents available
  • Just £6.99 a month

Not the one? Search for your essay title...
  • Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month

See related essaysSee related essays

Related International Baccalaureate Biology essays

  1. In this extended essay I am looking at the effect of different kind of ...

    each plant every day and you will also observe that, with days the number of branches in the plant increases. If you will not take your of your plant properly your plant will bend and will die soon. So give support to plants when required.

  2. Extended Essay- How is production of carbon dioxide (CO2) during digestion affected by the ...

    Print. 3. Murray, Andy. "Sweeten to Taste." Beverage Spectrum Magazine - BevNet 1 October 2007: Print. 4. Anthony Carpi, Ph.D. "Carbohydrates," Visionlearning Vol. 2 Issue. 5, 2003.? 5. Bounds, Laura E.; Agnor, Dottiedee; Darnell, Gayden S.; and Shea, Kirstin Brekken (2003). Health and Fitness: A Guide to a Healthy Lifestyle, 2nd edition.

  1. Should Animals have the same rights as Humans? Both animals and humans exhibit behaviours ...

    However, once again the breed of dog is not known. Dogs bred for particular purposes may have greater visual acuity. Some improvements I would make to this experiment would be perhaps to use different colours of circle and square and reinforce one colour, for example red, but not another for example blue.

  2. The effect of pvc piping on the breathing/heart rates of male year 12 students

    Since the straw is longer the distance air needs to be drawn from increases and air is further compacted, resulting in inhalation becoming more difficult. This means that even less oxygen is taken in translating to the heart having to work even harder to transfer an again decreased volume of oxygen.

  1. Bio lab - Oxygen Consumption in germinating and non-germinating seeds

    at the reading of the 1.0 ml pipettes of the respirometres for 30 minutes in room temperature. The pipettes each contain, germinating seeds, non-germinating seeds and bead. Qualitative Description: The germinating seeds were yellowish green, round and slightly wrinkled. They were also wet because they were being germinated for 24 hours.

  2. Allelopathy. Open Investigation Will increasing the number of allelopathic sunflower plants effect the ...

    Pick out seeds with the same or similar shape and size. Pick out twenty-five bean seeds and fifty sunflower seeds 9. For pots labelled "0", "2", "3" and "4", place one bean seed in the middle of the pots. According to the number on the pots, place that many number of sunflower seeds inside the pot surrounding the bean seed.

  1. The effect of toliet cleaning products on E-coli ...

    The second process is the inhibition of bacteria enzymes which result in an inability to reproduce, hence limiting growth. Both of these processes would result in a limited bacteria population (John. L, pg 1, 2008). Different toilet cleaning products ability to perform either of these growth inhibiting processes will be examined.

  2. Identification of Carbohydrates ,Lipids,and Proteins lab

    The solution turns red if there are lipids present. Purpose: To show the presence of lipids in various foods. Independent Variables: The materials tested Dependent Variables: the translucency of the paper/ the presence of colloidal droplets/ the colour of a substance. Controlled variables: same paper is used, same amount of materials, same amount of ethanol used, same amount of

  • Over 160,000 pieces
    of student written work
  • Annotated by
    experienced teachers
  • Ideas and feedback to
    improve your own work