The HIV Virus

Q.

What is the mechanism by which the AIDS virus causes deficiency of immune system of the infected person ?

Q. Which among the following cells does HIV attack first?

1. Leucocytes
2. Thrombocytes
3. B-lymphocytes
4. T-lymphocytes

Q.

What is the mechanism by which the AIDS virus causes deficiency of immune system of the infected person?

Q. Stanley Cohen and _____A____developed recombinant DNA technology in___B_______.

1. A - Herbert Boyer, B - 1964
2. A - Kary Mullis, B - 1973
3. A - Herbert Boyer, B - 1972
4. A - Kary Mullis, B - 1964

Q. AIDS was first reported in ___a____ and in the last ___b____ years or so, it kills more than ______c____ persons.

1. a- USA, b-25, c-$2.5\times {10}^7$
2. a- India, b-25, c-$2.5\times {10}^6$
3. a- India, b-25, c-$25\times {10}^5$
4. a- USA, b-30, c-$25\times {10}^6$

Q. WhyAIDSdoes not spread through mosquito bite?

Q.

Expand HIV.

Q.

AIDS virus has

1. Single stranded DNA

2. Double stranded DNA

3. Single stranded RNA

4. Double stranded RNA

Q. Which one is correctly matched?

1. Oncogenes - Ageing
2. Replication fork - mRNA
3. Initiation factors - Amino acid activation
4. AIDS virus - Reverse transcriptase

Q. What are the symptoms related to Goborrhea and Chlamydia?

Q. Erythroblastosis foetalis occurs when:

1. Mother is Rh negative and father is Rh positive.
2. Father is Rh negative and mother is Rh positive.
3. Both are Rh positive.
4. Both are Rh negative.

Q.

Is Vitiligo an autoimmune disease?

Q. At which stage of HIV infection does one show symptoms of AIDS?

1. Within 15 days of sexual contact with an infected person
2. When the infecting retrovirus enters the host cells
3. When viral DNA is produced by reverse transcriptase
4. When HIV replicates rapidly in T helper cells and damage large number of these.

Q. Which among the following cells does HIV attack first?

1. Leucocytes
2. Thrombocytes
3. B-lymphocytes
4. T-lymphocytes

Q.

Which one of the following is attacked by HIV virus?

1. Red-blood cell

2. White-blood cells

3. Liver cell

4. long cell

Q. Unlike the lytic cycle of a bacteriophage, the reproductive cycle of an animal virus

1. usually lyses the host cell on release of new virions
2. involves the entry of the capsid into the cytoplasm of the host cell
3. involves the incorporation of viral DNA into the host cells gernome
4. requires the action of reverse transcriptase

Q. At which stage of HIV infection does one show symptoms of AIDS

1. Within 15 days of sexual contact with an infected person
2. When the infecting retrovirus enters the host cells
3. When viral DNA is produced by reverse transcriptase
4. When HIV replicates rapidly in T helper cells and damage large number of these.

Q. At which stage of HIV infection does one show symptoms of AIDS?

1. When the infecting retrovirus enters the host cells
2. When viral DNA is produced by reverse transcriptase
3. When HIV replicates rapidly in T helper cells and they damage a large number of these
4. Within 15 days of sexual contact with an infected person

Q. Write the name of a virus that causes AIDS.

Q. Select the right sequence regarding replication of HIV in a cell.

1. I --- II --- III --- IV --- V
2. II --- I --- III --- IV --- V
3. II --- III --- IV --- I --- V
4. V --- II --- I --- III --- IV

Q. Which one of the following does not follow central dogma of molecular biology

1. Mucor
2. Chlamydomonas
3. HIV
4. Pea

Q. Kale has delivered a baby.
a) Suggest the immunization schedule for the baby in the first six months.
b) What are all the diseases that can be cured as per the schedule?

Q.

HIV has ________ as genetic material.

1. Ss RNA

2. Ds DNA

3. Ds RNA

4. Ss DNA

Q. Sketch and label the 'Structure of HIV'.

Q.

______ is a fatal disease which reduces the immunity of the body.

1. TB

2. Typhoid

3. Syphilis

4. Acquired Immuno deficiency Syndrome

Q. Mention whether the following statements are true (T) or false (F)
AIDS is caused by a bacterium T/F

Q. Which of the following T-cells are destroyed by HIV?

1. Cytotoxic T-cells
2. Suppressor T-cells
3. Helper T-cells
4. Killer T-cells

Q. In retroviruses, RNA dependent DNA polymerase synthesizes

1. DNA
2. None of the above
3. RNA
4. RNA-DNA

Q. The human immuno deficiency virus (HIV) is a living entity because it can

1. Disturb host cell respiration
2. Undergoes reproduction in the host cell
3. Move from one cell to another
4. Excrete in human serum

Q.

Name the casual organism of AIDS.