★ Skin Growth Quiz
What is the oily substance that protects the skin against water called?
A. seaweed
B. callus
C. sebum
D. skin
Select your answer:

Topics:
Parts of the Brain Tracheostomy Care Careers in Health Care Nature of Science Immunisation Regulation of Urine Formation Oral Surgery Endocrine System Type 1 Diabetes Neurons Human Excretory System Tib/Fib, Knee and Femur Medical Microbiology Psychiatry Smoking Related DiseasesOther quiz:
Biology › Viewall of the molecules are organic EXCEPT
A. glucose
B. oxygen
C. protein
D. DNA
Brain › View
An effector is also known as a ____________ to an action
A. Stimulus
B. Sensory neuron
C. Motor neuron
D. Response