POSTLAB QUESTIONS\ Name : 1 . Identify the test you would perform to detect the presence of! Fat Sudan Starch Protein Reducing sugar 2

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1. Identify the test you would perform to detect the presence of:
2. Fat
3. Starch
4. Protein
5. Reducing sugar

1. Sucrose is a disaccharide. Yet, it tested negative for the presence of a reducing sugar. What can you conclude about the chemical structure of sucrose?
2. Why is it important to include bothy a positive control and a negative control when carrying out tests for organic compounds?
3. What substrate would fit into the active site of pepsin?
4. What substrate would fit into the active site of amino peptidase ?
5. Name the product(s) formed when proteins are hydrolyzed in the stomach?
6. Name the products formed when peptides are hydrolyzed in the small intestine?
7. Amylase is an enzyme that catalyzes the hydrolysis of starch. It is produced by your salivary glands as well as your pancreas, and has an optimal pH of 6.8. What does the phrase "optimal pH of 6.8 mean?
8. List at three environmental factors that influence enzyme activity.
9. What do you mean when we say that an enzyme has been "denatured"?
10. Why do most enzymes function poorly at very low temperatures ?

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POSTLAB QUESTIONS\Name :"1 .Identify the test you would perform to detect the presence of!"FatSudanStarchProteinReducing sugar2What is a reducing sugar ?any sugar that is capable of acting as a reducing agentbecause it has a free aldehyde group3 .Sucrose is a disaccharide . Yet , it tested negative for the presence of areducing sugar . What can you conclude about the chemical structure ofsucrose ?"4 .Why is it important to include both a positive control and a negative controlwhen carrying out tests for organic compounds ?!5 .Name a compound that you would use as a control in each of the 4 tests .Test+ Control Compound-Control CompoundBenedict'sLugol'sBiuretSudan III6 .The leaves of many plants are coated with a waxy substance that causesSudan IV test ?them to repel water . How would you expect this substance to react in the