How long will it take for a suntan to fade?
A) 10 to 20 days B) 5 to 10 days C) 20 to 40 days D) 40 to 50 days
Answer: D
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The agglutinogens that determine the ABO and Rh blood types are
A. found on the surface of erythrocytes. B. part of the reticular connective tissue of the spleen. C. found in the cytoplasm of the erythrocytes. D. located on the surface of the leukocytes. E. located in the cytoplasm of the leukocytes.
Which of the following is not a known cause of congenital anomalies?
A. Infectious disease in the mother during pregnancy B. A genetic disorder C. Exposure to teratogens during pregnancy D. Smoking during lactation E. Smoking during pregnancy
Which type of cell forms protein fibers in connective tissue proper?
A. Chondroblast B. Osteocyte C. Fibroblast D. Osteoblast E. Osteoclast
The respiratory center of the brain is located in the:
A. medulla. B. cerebrum. C. cerebellum. D. hypothalamus.