1. The following statements are true about hepatitis B 

     surface antigen (HBsAg) EXCEPT:

a. it is made up of protein

b. it is present in chronic carrier of hepatitis B.

c. its presence indicates the virus is in the blood.

d. it may be positive before the patient develops symptoms 

    of acute hepatitis B.

e. it disappears when patients fully recovers from the disease. 

AnswerAnswer: c

Hepatitis B surface antigen (HBsAg) is a protein 

antigen produced by HBV. It is the earliest indicator 

of acute hepatitis B and frequently identifies infected 

people before symptoms appear. HBsAg disappears from 

the blood during the recovery period. In some people 

(esp those infected as children or those with a weak 

immune system, such as those with AIDS), chronic 

infection with HBV may occur and HBsAg remains positive.

It is present in chronic carriers who may or may not 

have virus in the blood. Therefore, a positive (or 

reactive) result indicates infection but does not 

indicate whether the virus can be passed to others.

..

2. Which of the following test of hepatitis B  if positive 

     indicate the patient is highly contagious?

a. Hepatitis B surface antibody (anti-HBs).

b. Hepatitis B surface antigen (HBsAg).

c. Hepatitis B e-antigen (HBeAg).

d. Hepatitis B e-antigen antibody (anti-HBe).

e. Anti-hepatitis B core antigen (anti-HBc).

AnswerAnswer: c

Hepatitis B e-antigen (HBeAg): a positive result 

indicates the presence of virus in the blood and 

the patient is infectious.  

..

3. Which of the following test of hepatitis B indicates the

    patient is fully immune to hepatitis B?

b. Hepatitis B surface antigen (HBsAg).

c. Hepatitis B e-antigen (HBeAg).

d. Hepatitis B e-antigen antibody (anti-HBe).

e. Anti-hepatitis B core antigen (anti-HBc).

AnswerAnswer: b

Both anti-HBe and anti-HBc may be present in chronic carriers.

.

4. The following statements is true about hepatitis B

     EXCEPT :

a. it is a DNA virus.

b. it has an incubation period of 2 to 6 months.

c. it is associated with hepatocellular carcinoma.

d. the risk of becoming a chronic carrier after acute infection

    is about 1%.

e. it can be transmitted through blood product.

AnswerAnswer: d

The risk of becoming a chronic carrier after acute 

hepatitis B infection is about 10%.

.

5. Which of the following is a RNA virus:

a. rubella virus

b. Epstein-Barr virus

c. cytomegalovirus

d. herpes simplex virus

e. varicella zoster virus 

AnswerAnswer: a

The rest are DNA virus belonging to the family 

herpesviridae.