Select your answer:
Topics:
Organ Systems Tutor Oral Biology Human Health Composition of Blood and Blood Cells The Chemistry of Microbiology Respiration in Organisms Safety Terms Genetics Vocabulary Enzymes Body Systems & Anatomical Terms Circulatory System and Nutrition Immunity & Cancer Urinary System, Fluid, Electrolyte and ph Balance Microbial Growth Hospital Wards and DepartmentsOther quiz:
Skin Appendages › ViewThe surface of healthy skin is slightly?
A. yellow
B. alkaline
C. rough
D. acidic
Body Systems › View
Which system is responsible for breaking down nutrients?
A. Digestive
B. Respiratory
C. Circulatory
D. Excretory