超星 - 肝炎病毒--章节练习

单选题

Which of the following markers is usually the first viral marker detected after hepatitis B infection?

A. HBeAg
B. HBsAg
C. HBcAg
D. Anti-HBc
E. HBeAb

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单选题

Which one of the following markers is closely associated with HBV infectivity and DNA polymerase activity?

A. HBeAg
B. HBsAg
C. HBcAg
D. Anti-HBc
E. HBeAb

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单选题

Which of the following is found within the nuclei of infected hepatocytes and not usually in the peripheral circulation?

A. HBeAg
B. HBsAg
C. HBcAg
D. Anti-HBc
E. HBeAb

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单选题

Hepatitis C (HCV) is usually a clinically mild disease, with only minimal elevation of liver enzymes. Hospitalization is unusual. Which one of the following statements best characterized HCV?

A. Few cases progress to chronic liver diseases
B. It often occurs in posttransfusion patients
C. HBV but not HVC infections occur in Ⅳdrug abusers
D. It is a DNA virus
E. Blood products are not tested for antibody to HCV

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单选题

Hepatitis D virus (delta agent) is a defective virus that can replicate only in cells already infected with which of the following viruses?

A. Hepatitis A virus
B. Epstein-Barr virus
C. Hepatitis G virus
D. Hepatitis B virus
E. HIV

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单选题

Hepatitis E, a recently characterized hepatitis virus, is best described by which of the following statements?

A. It is not a threat to the blood supply
B. It is a major cause of blood-borne hepatitis
C. It is prevalent in North America
D. It is a single-stranded DNA virus
E. The disease resembles hepatitis C

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单选题

Infection with hepatitis D virus (HDV, delta agent) can occur simultaneously with infection with hepatitis B virus (HBV) or in a carrier of hepatitis B virus because HDV is a defective virus that requires HBV for its replicative function. What serologic test can be used to determine whether a patient with HDV is an HBV carrier?

A. HBsAg
B. HBc IgM
C. HBeAg
D. HBs IgM
E. HBs IgG

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