Which of the following classes of antibodies activates the inflammatory response by causing the release of histamine?
A) IgG
B) IgE
C) IgD
D) IgM
E) IgA
B
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The heartbeat originates in the:
A. sinoatrial node located at the junction of the vena cava and the right atrium. B. sinoatrial node located at the junction of the vena cava and the left atrium. C. atrioventricular node located in the wall of the atrioventricular valve. D. atrioventricular node located in the tissue separating the atria and ventricles. E. sinoatrial node and atrioventricular node simultaneously.
Overlap of niches can be minimized through:
A. increased population growth. B. species evolving similar adaptations over time. C. resource partitioning. D. reduction in the size of the fundamental niche. E. an increase in the similarity of species occupying an area.
Cell walls are not typically possessed by ________.
A. protozoa B. bacteria C. algae D. fungi
About 90% of the human genome contains the genes
Indicate whether the statement is true or false