★ 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:

Topics:
EMS Systems Properties of The Hair and Scalp Uses of Radioactive Radiation Living Organisms & Animal Behaviors Understanding Psychology Nervous System Lipid Metabolism Medical Nursing Medication Administration Anatomy and Physiology Skeletal System Virus, Bacteria, Immunity Central Nervous System Vitamin Enzymes and Digestion Blood Cells Circulatory and Nervous SystemOther quiz:
Hearing Impairment › ViewIf your inner ear lacked nerve fibers, what might happen?
A. Sound would be unable to travel to your brain.
B. Your eardrum would be unable to vibrate.
C. Your hammer could not tap against your anvil.
D. Sound waves could not enter your ear.
Aerobic- Cardio Respiratory Endurance › View
Resistance training is the best way to build which component of Fitness?
A. Cardiorespiratory Endurance
B. Muscular Strength and Endurance
C. Flexibility
D. Body Composition