Which of the following acts as a filter of blood?

1. Bone marrow

2. Lymph node

3. Spleen

4. Thymus

Spleen is not

1. Large reservoir of erythrocytes

2. Mainly contains lymphocytes and phagocytes

3. Bean shaped

4. Lobed organ

Which of the following is an antigen trap of tissue fluid?

1. Spleen

2. Thymus

3. Lymph nodes

4. Appendix

MALT is not/ doesn't/ haven't

AIDS, a deadly disease, what does the word Acquired indicate here?

1. It is because of Acquired immunity

2. It is because of deficiency of immune system

3. It is because of immuno deficiency

4. It is not a congenital disease

HIV is not/doesn't/hasn't

1. Retrovirus

2. an envelope

3. RNA genome which is naked

4. Envelope which is a protein coat

Transmission of HIV doesn't occur by which of the following?

1. Sexual contact with infected person

2. From infected mother to her child through placenta

3. Transfusion of blood among people

4. Intravenous drug abusers may share syringes with infected needles

The individual who are not at high risk of AIDS can be

The time lag between infection of HIV and appearance of symptoms usually is of

1. Few days to few months

2. Few months to 3 -4years

3. Few months to 5-10 years

4. Few days to few years

If new viruses are formed in an infected cell, can the cell survive at the release of viruses?