Phospholipids are important components of the plasma membrane. What does "B" represent on the diagram?
A. phosphorus
B. oxygen
C. nitrogen
D. polar (hydrophilic) region
E. nonpolar (hydrophobic) region
E
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Ensuring that young children have a sufficient amount of vitamin D will prevent ________.
A. rickets B. osteomalacia C. osteoporosis D. Paget's disease
Contraction of the cremaster and dartos muscles
A. causes the epididymis to shrink. B. increases during exercise. C. is responsible for ejaculation. D. pull the testes closer to the body. E. causes the penis to become erect.
Which of the following statements about diabetes mellitus is false?
A. Both type I and type II DM are characterized by lack of, or low levels of, insulin. B. The body produces autoantibodies that destroy the pancreatic beta cells in type I DM. C. Diabetic neuropathy is a common long term effect of DM. D. Type II DM is more common than type I DM. E. Target cells are unresponsive to insulin in type II DM.
Of the following muscles of the thigh, which one is on the posterior side?
A. rectus femoris B. sartorius C. adductor magnus D. biceps femoris E. gracilis