Biology 203 Final Exam Study Guide 110 Questions with Complete Solutions Describe the steps of the scientific method - Correct Answers -Observation: Use all 5 senses to see whats going on.
-Hypothesis: Make an educated guess about how something works.
-Prediction: Assume hypothesis is correct and predict the results. If... then...
-Experiment: Test your prediction
-Analysis and conclusion: Gather results and evaluate hypothesis
Explain the parts of a scientific paper - Correct Answers -Title
-Abstract: 1 paragraph on what you did, why it's important, and results.
-Introduction: Inform the reader about what your research is, why it's important, and reference others work.-Methods: Concise description of what you did, describe what statistics you used.
-Results: Data/stats, differences. Don't analyze data.
-Discussion: Analyze data with meanings, conclusion.
-References cited Explain the dependent, independent, and control variables - Correct Answers Dependent Variable- What's changing Independent Variable- What you're measuring Control Variable- What doesn't change What are Carbohydrates? What are the four types. - Correct Answers Carbohydrate: simple sugar or a larger molecule composed of multiple sugar units.-Monosaccharides -Disaccharides -Polysaccharides -Starch Monosaccharides - Correct Answers Single sugar molecule.Ex: ribose, deoxyribose, fructose, and glucose. 1 / 2
Disaccharides - Correct Answers Two joined monosaccharides.
Ex: sucrose, maltose, and lactose.
Polysaccharides - Correct Answers More than two monosaccharides joined together.
Ex: glucose
Starch - Correct Answers A key glucose-storing polysaccharide in plants, an important food molecule for humans.Proteins - Correct Answers A diverse group of macromolecules. Many are structural components of muscle, bone, hair, fingernails, and toenails, among other tissues. All proteins are chains of amino acids.Benedict's Solution - Correct Answers Tests for carbohydrates. Small carbohydrate molecules react upon heating with the copper-containing compound.Lugol's Solution (IKI) - Correct Answers Tests for carbohydrates. Dilute solution of potassium Iodine reacts with starch and forms deep blue/black.Biuret reagent - Correct Answers Tests for proteins. The greater the number of peptide bonds, the more intense the color reaction with Biuret.Sudan IV - Correct Answers Tests for lipids. Drop solution on a piece of uncoated paper, if it leave behind oil then it contains a lipid.
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Enzyme - Correct Answers Proteins that function as biological catalysts. Agents that speed up cellular reactions.Activation Energy - Correct Answers The amount of energy necessary for a chemical reaction to proceed.