Topics: Skin Structure, Growth, & Nutrition Quiz
what is the oily secretion that lubricates the skin and preserves the softness of the hair
A. sebum
B. collagen
C. elastin
D. perspiration
Select your answer:

Topics:
Reproduction in Human Beings Acute Responses to Exercise Medicine on the Western Front Medical Nursing Immunity Surgical & Complementary Terms EM Spectrum Teeth and Microbes Cell Cycle Problems The Respiratory System Heterotrophic Nutrition Disease and Immunity Digestion Pathophysiology Transportation in OrganismsOther quiz:
Genetics › ViewTo ensure scientific results are valid, what should you do during an experiment?
A. Conduct multiple trials.
B. Change hypothesis to fit result.
C. Have more then one independent variable.
D. Ignore results.
Carbohydrates, Proteins and Lipids › View
Which macromolecule is this?
A. carbohydrate
B. lipid
C. protein
D. nucleic acid