Which of the following statements about the pathogenic strain 0157:H7 of E. coli is true?
A) It differs from the harmless laboratory strains of E. coli by only a few genes.
B) It shares several genes with other pathogenic bacteria, suggesting extensive genetic exchange among these species.
C) It is the primary cause of tuberculosis in the United States.
D) Both a and b
E) Both a and c

Question

Quizplus · Accepted Answer

The statement that the pathogenic strain 0157:H7 of E. coli shares several genes with other pathogenic bacteria, suggesting extensive genetic exchange among these species, is true. Option A is incorrect because the strain differs from harmless laboratory strains of E. coli by more than just a few genes. Option C is also incorrect because E. coli does not cause tuberculosis, which is caused by the bacterium Mycobacterium tuberculosis.

Which of the Following Statements About the Pathogenic Strain 0157:H7