Medical Quiz
Skin Structure, Growth, & Nutrition Quiz

the pigment produced to protect the skin from the effects of ultraviolet run rays is

A. keratin

B. melanin

C. elastin

D. collagen

Select your answer:
A  B  C  D  E 


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Other quiz: Pathogens

Diseases produces by pathogens

A. Cáncer

B. Non infectious disease

C. Infectious diseases

D. Allergies