Allergens combine with IgE to cause mast cells to release ________
A) interferons
B) histamine
C) plasma cells
D) interleukin I
B
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Ultraviolet (UV) light-treated bacteria would most likely have DNA damage in the form of
A) analog incorporation. B) pyrimidine dimer formation. C) intercalation of the bases. D) direct transition of the bases. E) deamination.
What allows fetal hemoglobin to remove oxygen from maternal hemoglobin?
A. Fetal hemoglobin has an extra heme group. B. Oxygen is more soluble in fetal blood than maternal blood. C. Fetal hemoglobin has a higher affinity for oxygen than does maternal hemoglobin. D. Fetal blood contains twice as many hemoglobin molecules than maternal blood. E. Fetal hemoglobin molecules are much larger than maternal hemoglobin molecules.
A human egg is approximately 100 ?m in size. This would equal to ____ mm
a. 0.10 b. 10.0 c. 0.010 d. 0.0010 e. 1.0
Which of these groups is most closely related to bonobos?
a. tarsiers b. humans c. lorises d. gorillas e. new world monkeys