Select your answer:
Topics:
Introduction to Mycology Uses of Radioactive Radiation Composition of Blood and Blood Cells Thyroid Foot Orthosis Vocab Health Systems Anatomy Bones Vision & Hearing Cell Division Human Anatomy and Physiology Nail Disorders and Diseases Protozoan Diseases Disease Outbreak and Transmission The Brain Purpose and Function of the Skeletal SystemOther quiz:
Forensics: Blood › ViewWhere are blood cells made?
A. bone marrow
B. heart
C. liver
D. brain
Circulatory System › View
What do scientists call bacteria and viruses that can make people sick?
A. diseases
B. vaccines
C. antibodies
D. pathogens