Immunoglobulin is the scientific name for
A. a phagocyctic cell
B. antibodies
C. cell-mediated immunity
D. complement activation
E. cytotoxic T cells
Ans: B. antibodies
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Adequate intake of __________ by a mother-to-be
before and during early pregnancy may reduce the risk of spina bifida and other serious neural tube defects. a. carbohydrates b. folic acid c. calcium d. vitamin C e. sodium
Any response of a plant to the relative lengths of light and darkness is referred to as:
a. gravitropism. b. photoperiodism. c. phototropism. d. thigmotropism. e. thigmomorphogenesis.
Research on flat-tailed horned lizards demonstrated that natural selection favored lizards that ______.
a. buried themselves faster when startled b. searched for ants hidden under logs c. had longer horns on the rear of the skull d. ran faster when exposed to bright sunlight
Which chromosome has a telomere but the p arm is much shorter than the q arm?
A) metacentric B) telocentric C) submetacentric D) sex chromosome E) acrocentric