The type of Escherichia coli that produces a verotoxin similar to the one produced by Shigella dysenteriae is ________ E. coli
A) enterohemorrhagic
B) enterotoxigenic
C) enteropathogenic
D) enteroimmunogenic
Answer: A
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Alum is an adjuvant
Indicate whether this statement is true or false.
The graph above depicts the relative increase in autism in children from 1997 to 2007 living in California. In 2001, the additive thimerosal was removed from most childhood vaccines
Based on the information presented in the graph, what can be concluded about the hypothesis that thimerosal causes autism? A) Thimerosal, at the very least, contributes to the occurrence of autism as evidenced by the almost logarithmic increase in children with autism from 2001 to 2007. B) Prior to 2001, thimerosal clearly influenced the cases of autism in California. C) A sharp decrease in the cases of autism would be expected after 2001 if thimerosal was the causative agent of autism. D) The results of the study are inclusive. E) Thimerosal requires some other agent to help induce autism.
Which experimental modification would most effectively help to determine the sequence of reactions and reaction intermediates in the Calvin cycle?
A. Exposing the cells to alternating periods of light and darkness B. Varying the amount of water the cells are exposed to C. Exposing the cells to radiolabeled O2 instead of 14CO2 D. Exposing the cells to 14CO2 for various time intervals
Antigens are
A. nonself proteins. B. proteins on the surface of B-cell membranes. C. proteins on the surface of macrophage membranes. D. proteins that consist of two light and two heavy chain polypeptide chains. E. proteins on the surface of T-cell membranes.