The PNS arises from which of the following?
A. Ectoderm
B. Endoderm
C. Mesenchyme
D. Mesoderm
E. Neural Crest
Answer: E. Neural Crest
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Consider the example of the Lime Swallowtail, Papilio demoleus, described in your book. On the Island of Hispaniola, which type of spatial distribution would you expect for this species?
A. random B. clustered (clumped) C. overdispersed
In the development of an oocyte, meiosis is
halted twice. What are those two phases of meiosis?
a. prophaseI and metaphase I b. prophaseII and metaphaseII c. metaphase I and prophase II d. prophase I and metaphase II e. prophase I and anaphase II
When erythrocytes are old or die, how are they removed from the blood stream?
1.The liver filters them out. 2.They break into small particles and are cleared out by the kidneys. 3.They dissolve into liquid and circulate in that form in the blood. 4.They are attacked by macrophages and removed. 5.They remain intact, dead cells and are filtered out by the kidneys.
The coating of microorganisms by serum components, thereby preparing them for recognition and ingestion by phagocytic cells is called
A) Agglutination B) Opsonization C) Differentiation D) Apoptosis