The immunologic technique involving the transfer of proteins separated by electrophoresis to nitrocellulose sheets is ________.
A. immunoblotting
B. complement fixation
C. direct immunofluorescence
D. immunoelectrophoresis
Answer: A
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The event directly before the beginning of
DNA replication is
a. the S phase. b. cytoplasmic division. c. the G1 stage. d. the G2 stage. e. mitosis.
A virus that uses RNA to make DNA is referred to as a(n)
a. retrovirus. b. archaevirus. c. parvovirus. d. poxvirus. e. papovavirus.
The adaptations of pronghorns
A) to open country could be a disadvantage in a densely forested environment. B) include a reflective coat, an ability to find small pools of water, and chemical defenses against most predators. C) to the open plains and shrub deserts of North America have helped them spread to nearly every continent. D) demonstrate that meeting the demands of local environmental conditions helps organisms extend their ranges to other types of environments.
Please order the following choices to reflect the mechanism and development of an immediate (Type 1) allergic reaction.
> A provoking exposure to the allergen occurs and mast cells and basophils degranulate, releasing histamine and other allergic mediators. > Individual experiences allergy symptoms. > B cells produce IgE directed against the allergen. > IgE coats (sensitizes) mast cells and basophils. > Individual is exposed to a sensitizing dose of an allergen.