Study Guide for Practical 1 2018.docx - Lab Practical#1 Study Guide Concepts for Lab#1 The Scientific Method and Macromolecules Writing Hypotheses and

Study Guide for Practical 1 2018.docx - Lab Practical#1...

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Lab Practical #1 Study Guide Concepts for Lab #1: The Scientific Method and Macromolecules Writing Hypotheses and Predictions Designing a controlled, measurable experiment Components of an experiment Positive control: will give positive result if experiment works Negative control: will give a negative result if experiment works Dependent variable: variable researcher directly measuring (color) Independent variable: variable researcher varying, alters dependent variable outcome (milk/nutrigrain) Control variable: all components that should be kept constant (volumes of solution, temperature of solution) Analyzing experimental outcomes How the macromolecule tests work (but not which one tests for which) Biuret: proteins Benedict’s: simple sugars Iodine: complex sugars Sudan IV: lipids Analyzing results of tests (you would be given positive and negative control results as reference) Biuret: purple = positive Benedict’s: brown, red, yellow, orange =positive
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  • Spring '08
  • porter
  • Enzyme, enzymatic reaction, alters dependent variable, variable researcher

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