Which of the following people would have the greatest risk of getting skin cancer?
A.
A 31-year old dark-skinned male
B.
A 23-year old female with blond hair and hazel eyes
C.
A 55-year old male with brown hair and brown eyes
D.
A 68-year old male with blond hair and blue eyes
D
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Approximately what percent of the oxygen in blood is transported by the hemoglobin of erythrocytes?
A. 33% B. 50% C. 66% D. 75% E. 98%
Having examined a cheek cell under a microscope, you can confidently state that ________
A) the cells are large, flat, and have centrally located nucleus. B) the cells are full of distinct fibers. C) the cells are dimpled and flat in their centers. D) the cells have long processes like axons and dendrites.
Of the muscles listed, the only one not innervated by the pudendal nerve is the
A. external anal sphincter. B. iliococcygeus. C. puborectalis. D. pubococcygeus. E. coccygeus.
Unlike an exocrine gland, an endocrine gland
A. secretes to a surface. B. sheds cells with its secretions. C. is a secretory organ. D. contains goblet cells. E. has no ducts.