Basic Chemistry for Investigating Living Systems

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LABORATORY 3:
LABORATORY 3:

Basic Chemistry for Investigating Living Systems

Abstract
The purpose of this experiment was to explain how colorimetry can be used to qualitatively detect cellular chemical components; to chemically differentiate between proteins, sugars, starches, and lipids; to identify the roles of molecular components in living systems; to comprehend the value of using a systematic approach to research; and to describe why hypotheses, controls, standards, and quality control are important in scientific research (Vorndam, 2002, p. 92).

Basic Chemistry for Investigating Living Systems

Abstract
The purpose of this experiment was to explain how colorimetry can be used to qualitatively detect cellular chemical components; to chemically differentiate between proteins, sugars, starches, and lipids; to identify the roles of molecular components in living systems; to comprehend the value of using a systematic approach to research; and to describe why hypotheses, controls, standards, and quality control are important in scientific research (Vorndam, 2002, p. 92).

1 Cutting Board(IndependentVariable) | 1 Sharp Knife(Independent Variable) | 1 Aluminum Foil 6 x 6 cm(Dependent Variable) | 1 Pipet Empty, Short Stem(Dependent Variable) | 1 Pipet, Graduated Jumbo (5 mL)(Dependent Variable) | 1 Distilled Water(Independent Variable) | 1 Potato(Independent Variable) | 2 Beaker, 50 mL Plastic(Dependent Variable) | 1 Test Tube(9), 13 x 100 mm(Dependent Variable) | 1 Benedict's Reagent - 15 mL in Dropper Bottle(Dependent Variable) | 1 Stove or Microwave(Independent Variable) | 1 Aluminum Foil 12 x 12 cm(Dependent Variable) | 1 Cylinder, 50 mL Plastic(Dependent Variable) | 1 Rod, Stirring rod – Glass(Dependent Variable) | 1 Sudan III - 2 mL in Glass Vial(Dependent Variable) | 1 Masking Tape(Independent Variable) | 5 Plastic Jars(Independent Variable) | 1 Dissection Kit(Dependent Variable) | 1 Starch Solution, 1% Stabilized - 60 mL inDropper



References: Cell Membrane. Wikipedia: The Free Encyclopedia. Wikimedia Foundation, Inc. 20 September 2011. Friday 28 Oct. 2011. <http://en.wikipedia.org/wiki/Cell_membrane> Richardson, R. (2010, November). Prelab for exercise 4-1 chemical tests for biomolecules (p. 81). Retrieved October 28, 2011, from the Bellevue College Science Division site http://scidiv.bellevuecollege.edu/rkr/biology160/labs/pdfs/ChemistryTests160.pdf Saddleback College University. (2011, September). BIO 3A laboratory biologically important molecules (pp. 2-5). Retrieved October 28, 2011, from http://www.saddleback.edu/faculty/thuntley/bio3a/labs/bio3alabmolecules.pdf University of Massachusetts. n.d. Analysis of carbohydrates. Retrieved October 28, 2011, from http://people.umass.edu/~mcclemen/581Carbohydrates.html University of Massachusetts. n.d. Analysis of proteins. Retrieved October 28, 2011, from http://people.umass.edu/~mcclemen/581Proteins.html University of Massachusetts. n.d. Analysis of lipids. Retrieved October 28, 2011, from http://people.umass.edu/~mcclemen/581Lipids.html Vorndam, E. M. (2001). Basic chemistry for investigating living systems. General biology for the college science major (pp. 92-111). Englewood, CO: Hands-On Labs, Incorporated. West Carolina University. (2004). BIOL 140 lab—the chemical composition of cells. Retrieved October 28, 2011, from http://paws.wcu.edu/michaelis/lab%20chem%20comp.pdf

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