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Why is AIDS called secondary immunodefic...

Why is AIDS called secondary immunodeficiency?

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### Step-by-Step Text Solution 1. **Understanding AIDS**: - AIDS stands for Acquired Immunodeficiency Syndrome. It is a condition characterized by a weakened immune system, which means the body's ability to fight infections and diseases is compromised. 2. **Nature of Immunodeficiency**: - The term "immunodeficiency" refers to a deficiency or weakness in the immune system. In the case of AIDS, this deficiency is acquired during a person's lifetime, rather than being present at birth. ...
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Why is SCID called primary immunodeficiency?

Immuno - deficiencies are the diseases which occur due to impaired immune responses. These immuno - deficiencies may be primary or secondary. AIDS is a secondary immunodeficiency caused by a retrovirus Human Immunodeficiency Virus (HIV). Following diagram is that of HIV. Observe the diagram and answer the questions listed below the diagram : (i) State one difference primary immunodeficiency and secondary immunodeficiency. (ii) Why is HIV called a retrovirus? (iii) Identify the parts of the diagram labelled as A and B.

Knowledge Check

  • Assertion: SCID is a primary immunodeficiency. Reason: It is a serous congenital immunodeficiency.

    A
    If both Assertion and Reason are true and the reason is the correct explanation of the assertion, then mark (1).
    B
    If both Assertin and Reason are true but the reason is not the correct explanation of the assertion, then mark (20.
    C
    If Assertion is true but Reason is false, then mark (3).
    D
    If both Assertion and Reason are false. Then mark (4).

  • Assertion : SCID is a primary immunodeficiency. Reason : It is a serious congenital immunodeficiency.

    A
    If both the assertion and the reason are true and the reason is a correct explanation of the assertion
    B
    If both the assertion and reason are true but the reason is not a correct exaplanation of the assertion
    C
    If the assertion is true but the reason is false
    D
    If both the assertion and reason are false

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