Benedicts Reagent Hydrolysis Biology Lab Report

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1. What kind of reaction adds water to break large biomolecules into subunits?_________

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2. What kind of protein is lactase, the biomolecule that speeds up the breakdown of lactose?___________

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3. What kind of bond forms during a dehydration synthesis reaction involving two amino acids?_____________

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4. If maltose undergoes hydrolysis, what subunits result?_________________

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5. As what molecule do plants store glucose?_____________

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6. If starch is present, what color will the iodine turn?_______________

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7. If a solution contains a large amount of glucose, what color will the Benedict’s reagent become?_______________

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8. What kinds of biomolecules are insoluble in water but soluble in alcohol or ether?___________

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9. If two fatty acids, glycerol, and a phosphate group undergo a dehydration reaction, what biomolecule forms?______________

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10. What is the name used for plant fats?______________

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11. What must be present to successfully break down fats during digestion?___________

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12. If you test an unknown substance with the biuret reagent and it turns purple, what is present?________

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13. If you test a sample of potato with the biuret reagent, what do you expect the results to be?_____________

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14. If you want to test a sample to see if glucose is present, what reagent should you use?_________________

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Thought Questions

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15. If amylase is added to a sample of potato and you test it with the Benedict’s reagent 10minutes later, what do you expect the results of the test to be? Justify your reply.____________________________________________________________________________________________________________________________________________________

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16. After enjoying a meal of fish and chips, you notice your shirt has an oily stain on it. Why won’t the oily stain come out when you dab at it with just water?______________________________________________________________________________________________________________________________________________________

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17. If the sample of water you test with biuret reagent turns purple, what should you conclude about the results of your experiment? Explain._________________________________________________________________________________________________________________________________________________________

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KU BIOLOGY LAB-II Laboratory 4 Chemical Composition of Cells Names:__________________________ Date :_______ LABORATORY REPORT 4 1. What kind of reaction adds water to break large biomolecules into subunits? _________ 2. What kind of protein is lactase, the biomolecule that speeds up the breakdown of lactose? ___________ 3. What kind of bond forms during a dehydration synthesis reaction involving two amino acids? _____________ 4. If maltose undergoes hydrolysis, what subunits result? _________________ 5. As what molecule do plants store glucose? _____________ 6. If starch is present, what color will the iodine turn? _______________ 7. If a solution contains a large amount of glucose, what color will the Benedict’s reagent become? _______________ 8. What kinds of biomolecules are insoluble in water but soluble in alcohol or ether? ___________ 9. If two fatty acids, glycerol, and a phosphate group undergo a dehydration reaction, what biomolecule forms? ______________ 10. What is the name used for plant fats? ______________ 11. What must be present to successfully break down fats during digestion? ___________ 12. If you test an unknown substance with the biuret reagent and it turns purple, what is present? ________ 13. If you test a sample of potato with the biuret reagent, what do you expect the results to be? _____________ 14. If you want to test a sample to see if glucose is present, what reagent should you use? _________________ Thought Questions 15. If amylase is added to a sample of potato and you test it with the Benedict’s reagent 10 minutes later, what do you expect the results of the test to be? Justify your reply. ___________________________________________________________________________ _________________________________________________________________________ 16. After enjoying a meal of fish and chips, you notice your shirt has an oily stain on it. Why won’t the oily stain come out when you dab at it with just water? ___________________________________________________________________________ ___________________________________________________________________________ 17. If the sample of water you test with biuret reagent turns purple, what should you conclude about the results of your experiment? Explain. ______________________________________________________________________________ ___________________________________________________________________________
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Explanation & Answer

Hello, here are the answers to the questions, I think they were fairly straight forward but let me know if you'd like me to add or change anything

Biology Lab
1. Hydrolysis
2. Enzyme
3. Peptide
4. Glucose
5. Starch
...


Anonymous
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