Secreted in breast milk, what class of antibody helps protect the newborn through neutralization and agglutination of antigen?
A) IgM
B) IgE
C) IgG
D) IgD
E) IgA
Answer: E) IgA
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If it were found that all animals except the Parazoa had a particular set of genes, one could conclude
A. that those genes are not useful in interpreting phylogeny. B. that Darwin was incorrect in his idea about descent with modification. C. that the Parazoa are not animals. D. that those genes probably are related to the embryonic formation of tissues. E. that those genes are related to cell wall formation.
Briefly discuss mechanisms that ectotherms can use to regulate their body temperature. What will be an ideal response?
Which is untrue of the portals of exit of a pathogen from the human body
a. Portals of exit are commonly the same as portals of entry b. Include secretions, excretion, discharge c. Can be shed or slough tissue d. All of the above are true
Xylem tissue may contain each of these cell types, except which?
A. Rays B. Sieve cells C. Fibers D. Vessel members E. Tracheids