Benedicts Reagent Hydrolysis Biology Lab Report

Benedicts Reagent Hydrolysis Biology Lab Report

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.___