Question

part e as a result of its involvement in a reaction, an enzyme ______. options: is unchanged, is used up, loses energy, loses a phosphate group, permanently alters its shape.

Explanation:

Enzymes are biological catalysts. A key property of catalysts (including enzymes) is that they are not consumed or permanently altered in the reactions they catalyze. They lower the activation energy of a reaction and can be reused. So, after participating in a reaction, an enzyme remains unchanged. The other options are incorrect: enzymes don't get used up (they can catalyze multiple reactions), they don't lose energy (they facilitate reactions without losing their own energy), losing a phosphate group is not a general result of enzyme action in a reaction, and they don't permanently alter their shape (though they may undergo temporary conformational changes during catalysis which they revert from).

Answer:

is unchanged