question: What regulates chemical messengers in the body?
choices.text: several genes wooden mechanisms antigens that cause allergy feedback mechanisms Lymphocytes mechanical mechanisms electronic mechanisms Two or more sets of alleles
choices.label: A B C D E F G H
fact2: Hormones are chemical messengers in the body.
combinedfact: Chemical messengers in the body are regulated by feedback mechanisms.
formatted_question: What regulates chemical messengers in the body? (A) several genes (B) wooden mechanisms (C) antigens that cause allergy (D) feedback mechanisms (E) Lymphocytes (F) mechanical mechanisms (G) electronic mechanisms (H) Two or more sets of alleles