The clumping of test red blood cells indicates a negative test result (no antibodies against the virus in the patient's serum) in the
A) direct agglutination test.
B) indirect agglutination test.
C) complement-fixation test.
D) precipitation test.
E) viral hemagglutination inhibition test.
E
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Observing replication of circular plasmid DNAs by electron microscopy showed that:
A. replication initiates at multiple origins, creating multiple replication bubbles in the plasmid. B. template strands completely unwind before replication starts. C. replication initiates from a single origin, creating a single replication bubble in the plasmid. D. the plasmid DNA must become linear before replication can initiate at each end of the linear plasmid. E. replication occurred only at one replication fork of the bubble created.
If a culture of Bacillus anthracis containing endospores was used in this experiment, do you think this culture would be more or less susceptible to the chemical disinfectants than Pseudomonas aeruginosa?
A) Bacillus anthracis would be more susceptible to chemical disinfection than Pseudomonas aeruginosa B) Bacillus anthracis would be less susceptible to chemical disinfection than Pseudomonas aeruginosa
Gene expression involves the process of transcription and translation
Indicate whether the statement is true or false
Cell division of cocci in several planes produces a ________ arrangement.
A) streptococcal B) staphylococcal C) streptobacilli