This is the process a cell goes through to select which genes it will express.
A. differentiation
B. somatic cell transfer
C. discrimination
D. determination
D. determination
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Which of the following changes would be expected to cause vasoconstriction in an arteriole?
A. increases in carbon dioxide B. increases in lactic acid C. increases in potassium ion concentration D. decreases in pH E. None of the changes listed for this question would cause vasoconstriction.
The structure of the cartilaginous and bony fishes that detects vibrations in the water is the
a. anal fin. b. operculum. c. nostrils. d. lateral line.
Which of the following is not a strategy of the body to defend against foreign organisms and cancer cells?
A) physical barrier B) adaptive immune response C) antibiotic pills D) internal cellular defense
A wolf that feeds on moose and elk would be classified within which trophic level?
A. detritivore B. herbivore C. secondary carnivore D. primary carnivore E. primary producer