The respiratory center is very sensitive to changes in ________ levels, but not very sensitive to changes in ________ levels
A) blood sugar; hormone
B) carbon dioxide; oxygen
C) oxygen; carbon dioxide
D) hormone; blood sugar
E) temperature; blood pressure
B
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Typically, to grow transgenic plants, the vector with the inserted gene is
A. an egg cell. B. a pollen cell. C. a pollen cell that is then fused with an egg cell. D. plant cell that is then cultured to produce a whole plant. E. all of these techniques are widely used.
The aquaous humor is much ____ liquid behind the cornea to the _____.
Fill in the blank(s) with the appropriate word(s).
Vertical transmission include all of the following routes EXCEPT:
A. Transplacental B. Contracting the microbe during childbirth C. Viral DNA sequence found in the parental genome D. breast milk E. ingestion of infected milk formulae
The infectious stage of a beef tapeworm for humans is the
A. gravid proglottids in feces. B. eggs in contaminated water. C. larvae in feces. D. cysticerci in beef. E. mature worms.