Abiologist working in a lab adds a compound to a solution that contains an enzyme and substrate. this particular compound binds reversibly to the enzyme at the active site. once the compound is bound to the enzyme, the catalysis of substrate to product stops. which of the statements is true of the compound? a. the effect of the compound cannot be overcome by adding more substrate. b. the compound is a catalyst for the reaction. c. the compound is an allosteric inhibitor. d. the effect of the compound can be overcome by adding more substrate. e. the compound is an allosteric activator.