The substructure within a neuron's cell body that contains the cell's DNA is called the ________

ADHD is a psychological disorder found in ________of school-age children in America

a. 2-3% b. 3-4% c. 3-5% d. 4-5% e. 5-6%

During the last year, Davis noticed that he started to grow facial hair and is now able to sing lower notes in choir. These characteristics are caused by

A) FSH. B) androstenedione. C) his penis size. D) testosterone.