Antigen exposure is necessary to
A) induce genetic hypermutation in B cells with productive antibody genes.
B) stimulate B cell to differentiate to plasma cell.
C) stimulate B cell to produce soluble antibodies.
D) stimulate B cell differentiation, antibody production, and genetic hypermutation of antibody genes.
Answer: D
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Which group of Insects makes up approximately 10% of the animal biomass on Earth?
a. Flies b. Butterflies c. Bees d. Beetles e. Ants
A body plan with a pseudocoelom is indicated
by a. A. b. B. c. C. d. A and B. e. B and C.
The midline suture marking the articulation of the two parietal bones is called the ________ suture.
Fill in the blank(s) with the appropriate word(s).
Which statement best sums up our understanding of how animals navigate during migration?
A. We have a thorough understanding of orientation but not navigation. B. Animal navigation is a complete mystery. C. The mechanisms have been worked out in great detail, from the genes involved, to the brain structures, to the resulting behavior. D. We have some understanding of the information different animals rely on (sun, stars, or magnetic fields), and some sensory structures, but beyond that the mechanisms are still mysterious.