In the primary response to an antigen, the first class of antibody to be secreted is

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


Answer: D

Biology & Microbiology

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The biological specialty that deals with the grouping and naming of organisms is called taxonomy or _________.

Fill in the blank(s) with the appropriate word(s).

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Renewable energies like solar, wind, and hydroelectric power are clearly greener than fossil fuels, but they still have drawbacks. What are some of the drawbacks of each kind of renewable energy, and how might these problems be solved?

What will be an ideal response?

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Which technique can be used to identify Down syndrome in a developing fetus?

A) PCR B) Southern blot C) Chorionic villus sampling D) Gel electrophoresis E) RFLP

Biology & Microbiology