The antibodies associated with allergies primarily belong to the _______ class.

A. IgG
B. IgM
C. IgA
D. IgE


Answer: D. IgE

Biology & Microbiology

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According to the first law of thermodynamics,

a. matter can be created and destroyed. b. matter only changes forms. c. energy can be created and destroyed. d. energy only changes forms. e. matter and energy can be interconverted.

Biology & Microbiology

The process in which nitrogenous waste products are decomposed by soil bacteria and fungi releasing NH3 or NH4 is

____. a. nitrification b. ammonification c. denitrification d. nitrogen fixation e. hydrogenation

Biology & Microbiology

Results from the study of globin variants indicate that

A. all amino acid substitutions cause severe phenotypic effects. B. the alteration of one amino acid can cause a genetic disease. C. extended chains do not function to carry oxygen. D. all mutations in globin are caused by changes in amino acids. E. none of these is indicated.

Biology & Microbiology

The transfer of antibodies in breast milk to an infant is an example of ________ immunity

A) nonspecific B) passive C) humoral D) active

Biology & Microbiology