Addition of Water Across a Double Bond, or Removal of Water

question 63

Multiple Choice

Addition of water across a double bond, or removal of water to form a double bond, is catalyzed by a subclass of the lyase class of enzymes. Which of these enzymes would be a lyase?

• A) glyceraldehyde-3-phosphate dehydrogenase
• B) triose phosphate isomerase (TPI)
• C) phosphoglycerate mutase
• D) hexokinase
• E) enolase

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Definitions:

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