Which brain structure is important in forming emotional memories? A. Cerebral cortex
B. Amygdala
C. Pons
D. Reticular activating system

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