What body system functions in secreting chemicals that act as relatively slow-acting messengers between body parts? select one: a. the nervous system b. the endocrine system c. the lymphatic system d. the cardiovascular system e. the digestive system?

Name the type of chemical that speeds up digestion

Nucleic acid certain protein cell membranes certain carbohydrates

Vaccines are weakened forms of disease causing microorganisms, which are given to patients to prevent disease. after the vaccine is administered, the immune system responds by creating a(n) to recognize the a.) antibody, antibiotic b.) antigen, antibody c.)antibiotic, antibody d.)antibody, antigen