For most sports, peak age of performance occurs during the ____

Genetic factors seem to

a. play a stronger role in bipolar than depressive disorders. b. play a stronger role in depressive than bipolar mood disorders c. play an insignificant role in the cause of mood disorders. d. be almost impossible to pinpoint with current technology.

Adenosine receptors are blocked by ________, which in turn promotes ________

a. ethanol; euphoria b. caffeine; wakefulness c. nicotine; sleepiness d. caffeine; sleepiness e. glutamate; learning and memory