Advertisements
Advertisements
Question
What is the mechanism by which the AIDS virus causes deficiency of immune system of the infected person?
Advertisements
Solution
- After entering the body of an infected person, the AIDS virus enters the macrophage.
- Here, its RNA genome, with the help of the reverse transcriptase enzyme, forms viral DNA by replication, which enters the DNA in the cell 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 and 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 body of the infected person keeps decreasing.
- 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.
APPEARS IN
RELATED QUESTIONS
Write a note on HIV.
Mention the causative agent and the preventive measures for the following: Gonorrhoea
A confirmatory test used for detecting HIV infection is _________.
Match the following
| Column I | Column II |
| a. AIDS | i. Antibody production |
| b. Lysozyme | ii. Activation of B-cells |
| c. B-cells | iii. Immunoglobulin |
| d. T-helper cells | iv. Tears |
| e. Antibody | v. Immunodeficiency |
Communicable: AIDS: Non communicable: ______.
Value based question
How can informational efforts change people’s HIV knowledge and behaviour?
Which one of the following groups includes sexually transmitted diseases caused by bacteria only?
Describe the major STDs and their symptoms.
Write the preventive measures of STDs.
All of the following are modes of transmission of HIV, EXCEPT ______.
From the sexually transmitted diseases mentioned below, identify the one which does not specifically affect the sex organs ______.
STD/VD/UTI are ______.
Hepatitis B is transmitted through ______.
The common means of transmission of AIDS is ______.
Which of the following represents the correct match of a sexually transmitted disease with its pathogen?
A sexually transmitted disease symptomised by the development of chancre on the genitals is caused by the infection of ______.
AIDS is a sexually transmitted disease caused due to an infection by a ______
What are the benefits of using mechanical barriers during sexual act?
Hepatitis A causes cirrhosis of the liver.
Some human diseases are transmitted only when the blood of a patient comes in close contact with the blood of a healthy person. In one such disease, there is a progressive decrease in the WBC of the patient.
- Name the disease and its causative agent.
- Name the type of WBC affected during infection.
- How does the blood of a patient come in contact with the blood of a healthy patient?
- Suggest three methods that help in preventing such infection.
Which of the following will not be useful as a prevention in acquiring STDs?
STDs are a threat to reproductive health. Describe any two such diseases and suggest preventive measures.
‘An HIV patient normally doesn't die of ‘AIDS’, but death is caused due to many other infections.’ Do you agree with the statement? Give explanatory reasons in support of your answer.
Explain the principle on which the AIDS diagnostic test works.
With the help of a flow chart, illustrate how an infected animal cell can survive while viruses are being replicated or released.
|
Sapna has been diagnosed with an infection of the reproductive tract caused by bacteria. She experiences burning sensation during urination, pain around her genitalia and observes pus containing discharge. Her doctor tells her that this infection has an incubation period of two to five days but can be cured. |
What is the biological name of the causative agent of the disease Sapna is suffering from?
All STDs do not affect the genital organs. Justify the statement.
