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Q. No.Which of the following is correct regarding mode of transmission for diseases?
1.
Diseases cannot be transmitted through water.
2.
Airborne transmission is exclusive to non-infectious diseases.
3.
Vector-borne transmission involves the spread of diseases by organisms such as mosquitoes and ticks.
4.
Direct contact is not a significant mode of transmission for infectious diseases.
Subtopic: Common Diseases in Humans |
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Which of the following statements about adaptive immunity is correct?
| 1. | Adaptive immunity provides immediate defense against pathogens without the need for prior exposure. |
| 2. | It is non-specific and does not distinguish between different pathogens. |
| 3. | Adaptive immunity involves memory, which leads to an enhanced response to repeated exposure to the same pathogen. |
| 4. | Antibodies play no role in the function of adaptive immunity. |
Subtopic: Details of Immunity |
88%
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Match the following components of innate immunity with their corresponding barriers:
1. A-1, B-4, C-2, D-3
2. A-3, B-1, C-4, D-2
3. A-2, B-3, C-1, D-4
4. A-4, B-2, C-3, D-1
| Column I | Column II | ||
| A | Skin | 1 | Physical barrier |
| B | Mucus | 2 | Chemical barrier |
| C | Stomach acid | 3 | Cellular barrier |
| D | Macrophages | 4 | Mechanical barrier |
1. A-1, B-4, C-2, D-3
2. A-3, B-1, C-4, D-2
3. A-2, B-3, C-1, D-4
4. A-4, B-2, C-3, D-1
Subtopic: Details of Immunity |
96%
From NCERT
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Graft rejection in organ transplantations is primarily due to:
| 1. | Infections introduced during surgery. |
| 2. | The recipient's cell mediated immune system recognizing the graft as foreign. |
| 3. | The recipient's humoral immune system recognizing the graft as foreign. |
| 4. | Incompatibility in blood type only. |
Subtopic: Details of Immunity |
92%
From NCERT
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Which of the following events occurs in the life cycle of the malarial parasite, Plasmodium, inside the human body?
| 1. | The parasite multiplies in the liver before infecting red blood cells. |
| 2. | Sporozoites multiply within red blood cells. |
| 3. | Gametocytes are formed in the stomach wall of the Anopheles mosquito. |
| 4. | The parasite undergoes sexual reproduction in the human liver. |
Subtopic: Treatment & Life Cycle of Malaria |
77%
From NCERT
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The primary difference between active and passive immunity is:
| 1. | Active immunity is long-lasting, while passive immunity is temporary. |
| 2. | Active immunity is provided by vaccines, while passive immunity is provided by natural infection. |
| 3. | Passive immunity involves the production of antibodies by the individual's own immune system. |
| 4. | Active immunity is immediate, while passive immunity takes time to develop. |
Subtopic: Active & Passive Immunity |
84%
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A retrovirus like HIV is characterized by:
| 1. | Having DNA as its genetic material. |
| 2. | Using reverse transcriptase to convert its RNA genome into DNA. |
| 3. | Directly translating its RNA genome into proteins. |
| 4. | Incorporating its DNA into the host's ribosomes. |
Subtopic: AIDS |
95%
From NCERT
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Consider the given two statements:
| Assertion (A): | Contact inhibition is a process where normal cells stop dividing when they come into contact with other cells. |
| Reason (R): | Cancer cells exhibit contact inhibition, which is why tumors grow in a controlled manner. |
| 1. | Both (A) and (R) are True and (R) is the correct explanation of (A). |
| 2. | Both (A) and (R) are True but (R) is not the correct explanation of (A) |
| 3. | (A) is True but (R) is False. |
| 4. | Both (A) and (R) are False. |
Subtopic: Cancer |
85%
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What are some of the ill effects of nicotine and smoking?
| 1. | Increased risk of osteoporosis and arthritis. |
| 2. | Decreased blood pressure and reduced anxiety. |
| 3. | Increased risk of cardiovascular diseases and lung cancer. |
| 4. | Improved pulmonary function and decreased risk of respiratory infections. |
Subtopic: Drugs & Alcohol Abuse |
94%
From NCERT
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Match the following common infectious diseases with their causative agents:
Options:
| Column A | Column B | ||
| 1. | Tuberculosis | A. | Plasmodium |
| 2. | Malaria | B. | HIV |
| 3. | AIDS | C. | Salmonella |
| 4. | Typhoid | D. | Mycobacterium |
| 1. | 1-B, 2-C, 3-D, 4-A | 2. | 1-C, 2-D, 3-A, 4-B |
| 3. | 1-A, 2-B, 3-C, 4-D | 4. | 1-D, 2-A, 3-B, 4-C |
Subtopic: Typhoid Fever | AIDS | Common Diseases in Humans |
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