In the sit-and-reach flexibility assessment, a man with average flexibility should be able to .A. barely reach his toesB. reach 3 inches beyond his toesC. reach 2 inches beyond his toesD. reach 1 inch beyond his toes Please select the best answer from the choices provided. ABCD

Feedback mechanisms regulate the rate of enzyme activity, effectively "turning off' an enzyme in a reversible way until more product is needed. which of the following would be most effective as a feedback mechanism? a. reduced concentration of product b. increased concentration of substrate c. a change in ph d. temporary binding of a non-substrate molecule in the active site