HSA 2006 Biology Item 47print

HSA 2006 Biology Item 47

CID
CID1eb0fa1a212357d6be3a1df9d98f2331
itemNum
47
initialLetter
A
itemType
SR
itemAnswerKey
3
itemMaxScorePoints
1
origNum
x

The graphs below show the effects of temperature and pH on the reaction rate of an enzyme.

Food will stay fresh longer when enzyme activity is slowed. Which of the following conditions would most likely slow enzyme activity?

  1. reducing pH from 8 to 7 by adding a weak acid
  2. increasing pH from 5 to 6 by adding a weak base
  3. reducing temperature from 30°C to 20°C by refrigeration
  4. increasing temperature from 30°C to 40°C by heating

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