The answers are:
Human Chorionic Gonadotropin (hCG) - Human chorionic gonadotropin is a hormone created by the placenta after attaching. The manifestation of hCG is noticed in several pregnancy tests.
Urobilin - is the chemical principally accountable for the yellow color of urine.
Penicillin - is a set of antibiotics which comprise procaine penicillin, penicillin V, penicillin G, and benzathine penicillin.