Question 1 of 5

Genus Rickettsia representatives are characterized by:

A. Gram-positive cell wall B. High resistance to external environment factors C. Intracellular parasitism D. None of the above

Question 2 of 5

Which of the following pathogenic mechanisms are not typical for autoimmune reactions?

A. Decreased functional activity of T-suppressors B. Loss of tolerance for T-helpers and B-lymphocytes C. Ag released by normally isolated tissues D. Formation of CD4+ cells

Question 3 of 5

Which of the following organisms is a common cause of peptic ulcers?

A. Treponema pallidum B. Vibrio cholerae C. Helicobacter pylori D. Escherichia coli

Question 4 of 5

Toxicity of disinfectant against microbial cells:

A. Is very weak B. Is very selective C. Is not selective D. Is temporary and more often reversible

Question 5 of 5

Complement fixation test

A. Is done in three stages B. Is a test that can be used to detect the presence of either specific antibody or specific antigen in a patient's serum C. Is done with human, not standardized complement proteins D. Can be made with or without sheep red blood cells

microbiology an introduction tortora test bank

Skildor

ATI RN

ATI RN