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446 questions in this collection · Page 15 of 45
Question 141 of 446
📘 CLASS XII
Human Health And Disease
Acquired immunity is characterized by two properties: memory and:
Acquired immunity, on the other hand is pathogen specific. It is characterised by memory.
Question 142 of 446
📘 CLASS XII
Human Health And Disease
If an immune response is required quickly against deadly microbes, we need to inject preformed antibodies. This method is called:
Directly injecting the preformed antibodies (antitoxin) is called passive immunisation.
Question 143 of 446
📘 CLASS XII
Human Health And Disease
To diagnose the cause of an allergy, the patient is exposed to or injected with:
For determining the cause of allergy, the patient is exposed to or injected with very small doses of possible allergens.
Question 144 of 446
📘 CLASS XII
Human Health And Disease
Rheumatoid arthritis is cited as an example of which type of immune dysfunction?
The body attacks self-cells, resulting in auto-immune disease, like Rheumatoid arthritis.
Question 145 of 446
📘 CLASS XII
Human Health And Disease
The thymus is a lobed organ located near the heart and beneath the breastbone, and it provides a micro-environment for the development and maturation of:
Both bone-marrow and thymus provide micro-environments for the development and maturation of T-lymphocytes.
Question 146 of 446
📘 CLASS XII
Human Health And Disease
Which structures are small solid structures located at different points along the lymphatic system that trap micro-organisms and antigens?
The lymph nodes are small solid structures located at different points along the lymphatic system. Lymph nodes serve to trap the micro-organisms or other antigens.
Question 147 of 446
📘 CLASS XII
Human Health And Disease
HIV is characterized as having an envelope enclosing which type of genome?
HIV is a retrovirus, which have an envelope enclosing the RNA genome.
Question 148 of 446
📘 CLASS XII
Human Health And Disease
Individuals who have multiple sexual partners are considered a high-risk group for HIV infection due to transmission by:
Transmission of HIV-infection generally occurs by sexual contact with infected person.
Question 149 of 446
📘 CLASS XII
Human Health And Disease
Cancer cells starve the surrounding normal tissues by competing aggressively for:
Malignant tumors starve the normal cells by competing for vital nutrients.
Question 150 of 446
📘 CLASS XII
Human Health And Disease
The chemical carcinogens present in tobacco smoke have been identified as a major cause of:
The chemical carcinogens present in tobacco smoke have been identified as a major cause of lung cancer.