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प्रश्न
What is the mechanism by which the AIDS virus causes deficiency of immune system of the infected person?
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उत्तर
- After entering the body of an infected person, the AIDS virus enters the macrophage.
- Here, its RNA genome is copied into viral DNA by the reverse transcriptase enzyme, which then integrates into the cell’s DNA and directs the formation of virus particles in the infected cells.
- The macrophage continues to produce the virus and acts as a production factory for HIV.
- HIV enters the helper T-lymphocyte, replicates itself, and produces progeny viruses.
- The progeny viruses present in the blood attack other helper T-lymphocytes.
- This process is repeated again and again, as a result of which the number of T-lymphocytes in the infected person’s body continues to decrease.
- The patient continuously suffers from fever and diarrhoea; weight keeps decreasing, and the patient’s immunity becomes so low that he is unable to fight these types of infections.
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संबंधित प्रश्न
Indiscrimate diagnostic practices using X-rays etc., should be avoided. Give one reason.
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Higher Order Thinking Skill (HOT)
A leading weekly magazine has recently published a survey analysis which says that number of AIDS patient in the country is increasing day by day. The report says that the awareness among the people about AIDS is still very poor. You are discussing the magazine report in your class and a team of your class decides to help people to fight against the dreadful disease.
- What problem you face when trying to educate the people in your village near by your school?
- How do you overcome the problem?
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Identify the correct set of antiretroviral drugs for AIDS.
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All of the following are modes of transmission of HIV, EXCEPT ______.
Gonorrhoea is generally treated using ______.
STD/VD/UTI are ______.
Disease or infections which are transmitted through sexual intercourse are collectively called ______.
AIDS is a sexually transmitted disease caused due to an infection by a ______
Describe sexually transmitted diseases and mention the ways to prevent them.
Human Immunodeficiency Virus (HIV) was first isolated by ______.
Which of the following will not be useful as a prevention in acquiring STDs?
Suggest the reproduction-related aspects in which counselling should be provided at the school level.
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With the help of a flow chart, illustrate how an infected animal cell can survive while viruses are being replicated or released.
All STDs do not affect the genital organs. Justify the statement.
The following is well-known abbreviation, which have been used in this chapter. Expand to its full form:
HIV
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Trichomonas vaginalis is classified as which organism type causing STIs?
Which STI is transmitted through sexual contact and mother-to-newborn transmission during childbirth?
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