Which of the following checks is purchased from a bank, written on the bank's own checking account, and signed by a bank official? 

A practice that specializes in obstetrics and gynecology might have which of the following types of reading material available for patients?

A) Hunting and fishing magazines B) Men's sports magazines C) Women's fashion magazines D) Men's health magazines

What are special proteins that attack invading organisms called?

A) Antibodies B) Antigens C) White blood cells D) Red blood cells