The activation of B cells involves
A. activation of B helper cells.
B. activation of complement.
C. secretion of interferon.
D. secretion of IL-2.
E. binding of helper T cells to class I MHC proteins.
D. secretion of IL-2.
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The reaction diagrammed to the right (more than once answer may apply):
A. is the final reaction of glycolysis. B. is one possible pathway in the fermentation of pyruvate. C. shows synthesis of the substrate that enters the citric acid cycle. D. occurs in the cytosol. E. occurs in the mitochondrial matrix. F. occurs twice for each glucose oxidized.
Describe the experimental design Mendel used while researching pea plant traits and explain the general result that lead him to form his hypothesis about the transmission of "factors" from parents to offspring?
What will be an ideal response?
What is the correct sequence of air flow in mammals?
a. nasal cavities, larynx, pharynx, bronchi, trachea b. nasal cavities, pharynx, bronchi, larynx, trachea c. nasal cavities, pharynx, larynx, trachea, bronchi d. nasal cavities, larynx, pharynx, trachea, bronchi e. nasal cavities, bronchi, larynx, trachea, pharynx
Which of the following sequences is inversely palindromic?
a. 5' GCATGC 3' b. 5' GCAACG 3' c. 5' GCAT 3' d. 5' GCAACGC 3' e. 5' GGAAAAGG 3'