IgE is the:
a. first antibody produced when an invading microorganism is initially encountered.
b. antibody that is associated with various parasitic infections.
c. antibody that is secreted in various body fluids and primarily protects those body surfaces lined with mucous membranes.
d. second antibody produced when an in-vading microorganism is initially encoun-tered and the most abundant.
B
Each of the five different classes of antibodies has its distinctive molecular configuration and is involved in the immune reaction in a different way. IgE is usually elevated in a parasitic infec-tion.
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The concept for examining speciation by reconstructing the evolutionary tree is the
a. biological species concept. b. examination of ring species. c. examination of clinal variation. d. morphological species concept. e. phylogenetic species concept.
DNA is removed from the genome and moved to a new position.
Match the description with the appropriate term.
Bacterial iron chelating proteins are known as:
A. anaphores B. siderophores C. cataphores D. ionophores
The sour flavor in some fermented foods is usually the result of (acetic/benzoid/lactic) acid production
What will be an ideal response?