When serum proteins are separated by electrophoresis and then antibodies specific for the serum proteins are placed in a parallel trough in order to form reaction arcs for each protein, the test is called
A. Ouchterlony double diffusion
B. Western blot
C. immunelectrophoresis
D. radioimmunoassay (RIA)
E. the Quellung test
Answer: C. immunelectrophoresis
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If organisms A, B, and C belong to the same class but to different orders and if organisms C, D, and E belong to the same order but to different families, which of the following pairs of organisms would be expected to show the greatest degree of structural homology?
A) A and D B) B and D C) B and C D) D and E
What is the first step during transcription initiation in prokaryotes?
A. RNA polymerase binds to the promoter. B. The transcription bubble is formed. C. Transcription factors bind to the TATA box sequence. D. The DNA double helix is unwound. E. RNA polymerase synthesizes a short primer.
Which of the following is a test to determine a patient's blood type by mixing the patient's red blood cells with antisera?
A) direct agglutination reaction B) passive agglutination reaction C) immunofluorescence D) neutralization reaction E) precipitation reaction
Which of the following is paired incorrectly?
A. plants; cellulose cell wall B. algae; chitin C. bacteria; peptidoglycan cell wall D. fungi; polysaccharide cell wall E. archaea; protein cell wall