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| 1 . |
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Refer to Activity 1: Assessing Starch Digestion by Salivary Amylase. What do tubes 2, 6 and 7 reveal about pH and amylase activity?
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| 2 . |
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Which pH buffer allowed the highest amylase activity?
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| 3 . |
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Which tube indicates that the amylase did not contain maltose?
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| 4 . |
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If control tubes were left out, what objections could be raised against the statement "Amylase digests maltose to starch"? [Hint]
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| 5 . |
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Why would the amylase present in the saliva not be active in the stomach?
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| 6 . |
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What effect does boiling have on enzyme activity? Choose all that apply.
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| 7 . |
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Refer to the data you collected for Activity 2: Assessing Cellulose Digestion. Which tubes showed a positive test for the IKI reagent? Choose all that apply.
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| 8 . |
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Which tubes showed a positive test for the Benedict's reagent?
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| 9 . |
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What was the effect of freezing tube 1?
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| 10 . |
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How does the effect of freezing differ from the effect of boiling? Check all that apply:
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| 11 . |
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Which of the following explanations best describes the effect of amylase on glucose in tube 3?
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| 12 . |
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What was the effect of amylase on cellulose in tube 4?
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| 13 . |
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Judging from the results of tubes 4, 5, and 7, what can be concluded about the digestion of cellulose?
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| 14 . |
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What was the effect of peptidase in tube 6? [Hint]
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| 15 . |
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Refer to Activity 3: Assessing Protein Digestion by Pepsin. Which pH provided the highest pepsin activity?
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| 16 . |
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Tubes 1 and 2 contained the same substances. Why were their optical density measurements different?
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| 17 . |
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What would happen if the temperature were decreased to 10(C? [Hint]
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| 18 . |
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Refer to Activity 4: Assessing Fat Digestion by Pancreatic Lipase and the Action of Bile. What was the difference in activity between test tubes 1 and 2?
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| 19 . |
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Which pH resulted in maximum lipase activity?
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| 20 . |
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In theory, would lipase be active in the mouth?
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Some questions in this exercise may have more than one correct answer. And answer choices in this exercise are randomized
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