Which of the Following Statements Is True of Enzymes

Multiple Choice

Which of the following statements is true of enzymes?

A) Required nonprotein cofactors generally alter the substrate specificity of enzymes.
B) Enzyme function is generally increased if the three-dimensional conformation of an enzyme is altered.
C) Enzyme function is generally independent of physical and chemical environmental factors such as pH and temperature.
D) Enzymes generally increase the rate of chemical reactions by lowering activation energy barriers.