---

---

Select your answer:
         

Next Quiz >

Topics:

Bacteria Pathophysiology_Endocrine Infectious Disease Anatomy - Muscle Contraction and Growth Lungs Respiratory and Urinary Healthcare Careers Gene Cloning First Aid Bleeding Eye and Ear Asexual Reproduction Skull Nail Enhancement Urinary System, Fluid, Electrolyte and ph Balance Animal Genetics and Nutrition

Other quiz:

Infectious Diseases › View

Smallpox has been eradicated, but not malaria or cholera.

Which statements correctly explain this?

1 Cholera pathogens in the intestines are not destroyed by antibiotics.
2 Plasmodium antigens change during the life cycle.
3 Smallpox antigens remain stable.
4 Vaccines only work against viruses.

A. 1, 2 and 3

B. 1, 2 and 4

C. 1, 3 and 4

D. 2, 3 and 4

---

Heart Anatomy › View

Vessels that allow gas exchange

A. arteries

B. capillaries

C. veins

---