Each antibody can bind
A) two epitopes of one kind and one epitope of a different kind.
B) two different types of epitopes.
C) three epitopes of the same kind.
D) two epitopes of the same kind.
E) one epitope only.
Ans: D) two epitopes of the same kind.
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The Golgi complex functions to
A) modify and secrete proteins to the external environment. B) sort proteins used within the cell. C) both modify and sort proteins into those destined for secretion and those that function in membrane structures. D) synthesize proteins.
The primary function of a phagocyte is to
A) destroy pathogens. B) engulf pathogens. C) evade pathogens. D) both engulf and destroy pathogens.
A water-vascular system that operates the tube feet is characteristic of the ____
a. arthropods b. annelids c. chordates d. mollusks e. echinoderms
The neuron is the basic unit of the nervous system
1.True 2.False