Each round of reactions in PCR ____ the number of DNA molecules from the target site
a. doubles
b. triples
c. quadruples
d. quintuples
e. does not affect
ANSWER: a
Biology & Microbiology
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Macrophage migration-inhibiting factor is a(n) _____________ that keeps macrophages in the local area of infection and inflammation.
Biology & Microbiology
If you identify a plant as Magnolia grandiflora, you therefore conclude that this plant is:
a. the nearest living relative of all angiosperms. b. a core angiosperm. c. a monocot. d. a eudicot. e. a dicot.
Biology & Microbiology
The hard, outer shell of vertebrate bone
A) does not contain osteons. B) is spongy bone. C) is made of glucosamine. D) is compact bone.
Biology & Microbiology
How is it that vertebrates are able to produce antibodies to virtually every foreign antigen with which they come in contact?
What will be an ideal response?
Biology & Microbiology