Which of the Following Statements About Allosteric Regulators Is True

Multiple Choice

Which of the following statements about allosteric regulators is true?

A) The plot for allosteric regulators often has a sigmoid curve.
B) All enzymes are allosterically regulated.
C) Enzymes that are allosterically regulated are made of multiple polypeptide subunits.
D) Both the active site and the regulatory site are present on the same subunit.
E) Allosteric regulators bind to the active site, blocking enzyme function.