A phosphatase is an enzyme that hydrolyses a phosphate group from a molecule. This means it breaks the bond between the phosphate group and the molecule it is attached to, resulting in the release of the phosphate group. This is opposed to a kinase, which adds a phosphate group to a molecule.

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A Phosphatase Is

Question 18

Multiple Choice

A phosphatase is

A) an enzyme that transfers a phosphate group to a molecule.
B) an enzyme that hydrolyses a phosphate group from a molecule.
C) an enzyme that reduces a phosphate group in a molecule.
D) an enzyme that oxidizes a phosphate group in a molecule.

Correct Answer: