Topics: Immunity and Vaccines Quiz
An organism that enters a life form and causes disease or sickness is a/an:
A. macrophage
B. pathogen
C. vaccine
D. flu
Select your answer:

Topics:
Disorders of The Joints Fitness Hematology & Blood Banking Biochemistry/Cells Vascular Nervous and Endocrine System Eye and Ear Nervous System/Endocrine System The Cardiovascular System: Blood Vessels and Hemodynamics Circulatory System and Nutrition Immunity Philosophy Medical Suffixes Phlebotomy CP A&P: CardiovascularOther quiz:
Skeletal System › ViewThe stuff, found inside areas of spongy bone, which is the primary site of red blood cell production.
A. red marrow
B. pink marrow
C. green marrow
Virus › View
Can any virus invade any cell?
A. yes
B. no