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Q. No.The immunodeficiency seen in patients suffering from AIDS is due to the fact that HIV selectively targets and destroys:
1. T helper cells
2. Macrophages and Mast cells
3. B cells
4. N K Cells
Subtopic: AIDS |
94%
From NCERT
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Cells of a malignant tumour reach distant sites through blood and wherever they get lodged in the body, start a new tumour there. This property is called:
1. Oncogenic transformation
2. Contact inhibition
3. Metastasis
4. Carcinogenesis
1. Oncogenic transformation
2. Contact inhibition
3. Metastasis
4. Carcinogenesis
Subtopic: Cancer |
91%
From NCERT
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In a monovalent antibody molecule:
| 1. | there are 4 heavy and two light chains |
| 2. | the chains are held together with disulphide bonds |
| 3. | an antigen binging site is present between two light chains |
| 4. | the light chains have secondary structures and the heavy chains have tertiary structure |
Subtopic: Details of Immunity |
74%
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B cells:
1. are processed in thymus
2. produce antibodies
3. are responsible for graft rejection
4. respond to the pathogen only from the primary lymphoid organs
1. are processed in thymus
2. produce antibodies
3. are responsible for graft rejection
4. respond to the pathogen only from the primary lymphoid organs
Subtopic: Details of Immunity |
83%
From NCERT
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To infect human cells, HIV:
| 1. | produces complementary DNA with reverse transcriptase |
| 2. | produces complementary RNA with reverse transcriptase |
| 3. | uses the receptors of certain drugs located on lung cells |
| 4. | must be transmitted by a vector |
Subtopic: AIDS | Cancer |
72%
From NCERT
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Cancer can be finally diagnosed by:
| 1. | immunomodulation by alpha interferons |
| 2. | Histopathology after taking a biopsy |
| 3. | CT Scan and MRI |
| 4. | Fiber optic endoscopy and FNAC |
Subtopic: Cancer |
From NCERT
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Match each item in Column I with one in Column II and select the correct match from the codes given:
Codes
| COLUMN I | COLUMN II | ||
| A | Morphine | P | Derived from poppy seeds, it is a strong painkiller |
| B | Alcohol | Q | In chronic cases, it can cause cirrhosis of liver |
| C | Nicotine | R | Derived from leaves of a plant, it is CNS stimulant and can cause hallucinations |
| D. | Cocaine | S | Stimulates adrenal medulla to release adrenaline and nor adrenaline |
Codes
| A | B | C | D | |
| 1. | Q | P | R | S |
| 2. | P | Q | S | R |
| 3. | R | S | Q | P |
| 4. | S | R | P | Q |
Subtopic: Drugs & Alcohol Abuse |
92%
From NCERT
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Given below are two statements:
In the light of the above statements, choose the most appropriate answer from the options given below:
1. Statement I is incorrect but Statement II is correct.
2. Both Statement I and Statement II are correct.
3. Both Statement I and Statement II are incorrect.
4. Statement I is correct but Statement II is incorrect.
| Statement I: | Autoimmune disorder is a condition where body defense mechanism recognized its own cells as foreign bodies |
| Statement II: | Rheumatoid arthritis is a condition where body does not attack self cells |
In the light of the above statements, choose the most appropriate answer from the options given below:
1. Statement I is incorrect but Statement II is correct.
2. Both Statement I and Statement II are correct.
3. Both Statement I and Statement II are incorrect.
4. Statement I is correct but Statement II is incorrect.
Subtopic: Allergies & Autoimmunity |
81%
From NCERT
NEET - 2022
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NEET 2026 - Target Batch - Vital
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Select the incorrect statement with respect to acquired immunity.
| 1. | Acquired immunity is non-specific type of defense present at the time of birth. |
| 2. | Primary response is produced when our body encounters a pathogen for the first time. |
| 3. | Anamnestic response is elicited on subsequent encounters with the same pathogen. |
| 4. | Anamnestic response is due to memory of first encounter. |
Subtopic: Details of Immunity |
81%
From NCERT
NEET - 2022
To view explanation, please take trial in the course.
NEET 2026 - Target Batch - Vital
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NEET 2026 - Target Batch - Vital
Immuno-suppressants are administered to burn patients or during organ transplantation to suppress:
1. Innate immunity
2. Cytokine Storm
3. Humoral immunity
4. Cell-mediated immunity
Subtopic: Details of Immunity |
88%
From NCERT
NEET - 2022
To view explanation, please take trial in the course.
NEET 2026 - Target Batch - Vital
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