Topics: Skin Structure, Growth, & Nutrition Quiz
What helps protect against UV rays?
A. sebum
B. keratin
C. elastin
D. melanin
Select your answer:
Topics:
Radiography Bones Protein and Amino Acid Metabolism Components of Physical Fitness Genetic Engineering Human Body Kidney - Loop of Henlé Nutrition in Humans and Animals Disorders of The Joints Cell and Tissue Infectious Diseases Deaf Blind Degeneration Pathology Heart and Circulatory System Pharmacology CalculationsOther quiz:
Bacteriology › ViewWhich of the following is absent in gram negative bacteria?
A. Lipid A
B. Lipoteichoic acid
C. Lipopolysaccharides
D. Porins
The Ear › View
What part is #7?
A. Semicircular Canals
B. Eustachian Tube
C. Cochlea
D. Oval Window