Skin cells play an important role in producing
A. vitamin A.
B. vitamin B.
C. vitamin C.
D. vitamin D.
Answer: D
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Which epidermal cell has a role in immunity and disease resistance?
a) Intraepidermal macrophages (Langerhans cells) b) Keratinocytes c) Melanocytes d) Tactile epithelial cells (Merkel cells) e) Podocytes
After receiving a karyotype of a fetus, it is discovered that it has Klinefelter's syndrome. What does this designation indicate?
A. The fetus is female and the result of only one gamete possessing an X chromosome. B. The fetus is male and the result of a Y-bearing sperm fertilizing an XX egg. C. The fetus is an XY male. D. The fetus is female and resulted from one of the gametes having an extra X chromosome.
When neither anti-A serum nor anti-B serum clot on a blood plate with donor blood, the blood is type ________
A) A B) B C) O D) AB
Which of the following is not a component of the cytoskeleton?
A. Microfilaments B. Microtubules C. Actin D. Intermediate filaments E. Cilia