Q. No.In the given diagram, A and B respectively represent:
1.
The N and the C terminus of the polypeptide
2.
The C and the N terminus of the polypeptide
3.
The constant and variable regions of the antibody molecule
4.
The variable and constant regions of the antibody molecule
Consider the given stages in the life cycle of Plasmodium and choose the correctly matched pair:
| 1. | A | Merozites infect humans when mosquito bites |
| 2. | B | The parasite reproduces sexually in liver cells |
| 3. | C | Symptoms of malaria |
| 4. | D | Fertilization in the hemocoel of the mosquito |
Common cold is not cured by antibiotics because it is
1. caused by a Gram-negaive bacterium
2. not an infectious disease
3. viral disease
4. caused by a Gram-positive bacterium
Study the diagram given and choose the correct statement:
| 1. | A: Retrovirus replicates outside the cell |
| 2. | B: Viral DNA is produced by the host's enzyme - reverse transcriptase |
| 3. | C: Viral DNA incorporates into the host genome |
| 4. | D: New viral DNA is produced by the infected cell |
Consider the following statements:
| I: | Innate immunity is a non-specific type of defense that is present at the time of birth. |
| II: | Acquired immunity is pathogen-specific and is characterized by memory. |
| III: | Memory-based acquired immunity developed in higher vertebrates based on the ability to distinguish self from non-self. |
Which of the above statements are true?
| 1. | I and II only | 2. | I and III only |
| 3. | II and III only | 4. | I, II and III |
Consider the following statements:
| I: | HIV is a retrovirus. |
| II: | It infects and destroys the CD4 T-lymphocytes. |
| III: | The newer antiretroviral drugs are a cure for HIV infection. |
Which of the above statements are true?
| 1. | I and II only | 2. | I and III only |
| 3. | II and III only | 4. | I, II, and III |
Consider the following statements:
| I: | Cancer is essentially a genetic disease caused by multiple mutational events. |
| II: | Cancerous cells are rapidly dividing cells that exhibit contact inhibition. |
| III: | Metstatsis is the most feared complication of any cancer. |
Which of the above statements are true?
| 1. | I and II only | 2. | I and III only |
| 3. | II and III only | 4. | I, II, and III |
Consider the following statements:
| I: | Plasmodium falciparum causes malignant tertian malaria. |
| II: | Release of hemosiderin from burst RBCs is responsible for paroxysms of malarial attacks. |
| III: | Sporozoites are the infectious forms of Plasmodium. |
Which of the above statements are true?
| 1. | I and II only | 2. | I and III only |
| 3. | II and III only | 4. | I, II, and III |
Select the option where all columns are correctly matched:
|
Disease |
Causative organism |
Feature |
|
|
1. |
Malignant malaria |
Plasmodium ovale |
Cerebral involvement |
|
2. |
Typhoid |
Salmonella typhi |
Confirmed by the VDRL test |
|
3. |
Elephantiasis |
Wuchereria bancrofti |
Waterborne disease |
|
4. |
Ringworm |
Microsporum |
Intense itching |
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