Structure I is the
A) nasal.
B) lacrimal.
C) maxilla.
D) ethmoid.
E) sphenoid.
B) lacrimal.
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Nodes of Ranvier lie between neurons.
Answer the following statement true (T) or false (F)
The trachea
A) is lined with a ciliated mucous membrane. B) is all of the above. C) includes 20 C-shaped cartilage rings. D) is a passageway for air.
Which of the following is a sign of primary stage syphilis?
A. A chancre sore B. Gummas C. A non-itchy rash D. All apply.
Why does meiosis pass through two complete cycles?
A. Because two cycles are necessary to produce the proper shape of the gametes B. So that the zygote will have the diploid number of chromosomes C. Because the chromosomes are still double-stranded at the end of meiosis I D. To allow crossing over to occur E. To assure that the gametes will be of the correct size