In the human species, a heterozygote advantage is demonstrated by which condition?
a. hemophilia
b. sickle cell anemia
c. Down syndrome
d. Klinefelter syndrome
e. albinism
B
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Glucose (C6H12O6) has a single carbonyl group (-C=O) in its linear form. Based on the number of oxygen atoms in glucose, how many hydroxyl groups (-OH) would you expect glucose to have?
A) 6 B) 5 C) 3 D) 1
The pressure of blood leaving the right ventricle is ______ than the pressure of blood leaving the left ventricle.
A. greater B. less C. not different
A 4-year-old boy attended day care 3 days per week. He was irritable, and his parents noticed that he had persistent perianal itching. A sticky paddle was pressed against the perianal region and sent to the laboratory for testing. The eggs microscopically observed would most likely have which one of the following morphologic features?
a. Long with a short buccal cavity b. Thin shell with internal granules c. Bipolar plugs d. Flat-sided, football-shaped
Which type of receptor is used by an owl to visually detect the movement of prey?
a. mechanoreceptors b. photoreceptors c. chemoreceptors d. thermoreceptors e. nociceptors