Fetal hemoglobin is hemoglobin that consists of two gamma chains and ________.
A) two alpha chains
B) two beta chains
C) two zeta chains
D) two epsilon chains
A) two alpha chains
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Among couples using a method of birth control consistently and correctly, the most important determinant of pregnancy risk is ______.
[A] their marital status [B] their ethnic or racial group [C] their income group [D] their frequency of sex
The oxygen production measured in the experiments of this exercise
a. is a consequence of the breakdown of hydrogen peroxide. b. is an index of enzyme activity. c. may depend on pH, temperature, or enzyme concentration. d. is all of the above.
Means of organizing, summarizing, and describing epidemiologic data by person, place, and time.
a. descriptive epidemiology b. analytical epidemiology c. Statistical epidemiology d. none of the above
The double helix model of DNA structure was proposed by
A. Griffith. B. Franklin. C. Watson and Crick. D. Avery. E. Chargaff.