Topics: Biology Quiz
Deficiency of which of the following nutrients is the most common cause of goiters?
A. Iodine
B. Calcium
C. Iron
D. Vitamin C
Select your answer:

Topics:
Biological Molecules and Enzymes Vascular Genetics Tissues Digestive System Medical Terminology Eyes and Hearing Human Organ System Protein Synthesis Enzymes Skin Structure, Growth & Nutrition Anatomy - Muscle Histology/NMJ/Physiology Principles of Microbiology First Aid Heart Anatomy Balanced Diet ShoulderOther quiz:
Excretory System › ViewMost of the nephron’s cells contain a large amount of mitochondria, especially the proximal tubule, ascending loop of Henle and distal tubule. The reason is that these cells perform which of the following functions?
A. filtration
B. diffusion
C. osmosis
D. active transport
Urinary System › View
What is the basic functional unit of the kidney?
A. glomerulus
B. nephron
C. collecting duct
D. glomerular capsule