★ Integumentary System Quiz
A pigment that gives the skin its color
A. sebum
B. dermis
C. melanin
D. keratination
Select your answer:
Topics:
Human Urinary System Circulatory and Lymphatic System Nutrition In Animal Muscle Tissue Carbohydrates Bone, Spine, and Joint Pathology Macromolecules & Enzymes Cell Theory Medicine on the Western Front PHE Microbial Growth Pathophysiology - Adaptive Immunity The Cell Cycle Geriatrics DiabetesOther quiz:
Protein and Amino Acid Metabolism › ViewWhat is the role of citric acid in the tricarboxylic acid (TCA) cycle?
A. Converts glucose to amino acids for storage
B. Converts ammonia to urea for excretion
C. Converts amino acids to glucose for energy
D. Converts acetyl-CoA to energy in the form of ATP
Cellular Respiration › View
When hydrogen ions are pumped from the mitochondrial matrix across the inner membrane and into the intermembrane space, the result is the
A. formation of ATP.
B. restoration of the Na+/K+ balance across the membrane.
C. reduction of NAD+.
D. creation of a proton gradient.