Q. No.
Recombinant DNA technology has allowed the
production of __A__ of pathogen in bacteria or yeast.
Here A is:-
1.
Pro-toxin.
2.
Anti-bodies.
3.
Antigenic polypeptide.
4.
Antigenic polysaccharide.
production of __A__ of pathogen in bacteria or yeast.
Here A is:-
Vaccines are available for the disease like
I. Polio.
II. Diptheria.
III. Pneumonia.
IV. Tetanus.
1. I, II, III & IV
2. I and IV only
3. I only
4. I, II & IV only
Select correct sequence about life cycle of Plasmodium:
| 1. | Sporozoites (human)RBCsLiver cellsGametocytes in bloodBlood meal (female mosquito)Multiply (female mosquito)Sporozoites (female mosquito) |
| 2. | Sporozoiters (human)Liver cellsRBCsGametocytes in bloodBlood meal (female mosquito)multiply (female mosquito)Sporozoites (female mosquito) |
| 3. | Gametocytes (female mosquito)Gametocytes (human)RBCsMultiplySporozoitesBlood meal (human)Sporozoites (female mosquito)Multiply (female mosquito)Gametocytes (female mosquito) |
| 4. | Sporozoites (human)Liver cellsGametocytes in bloodRBCsBlood meal(female mosquito)Multiply (female mosquito)Sporozoites (female mosquito) |
When a quick immune response is required, we can
1. Directly inject weakened pathogen at time of emergency.
2. Directly inject preformed antigens.
3. Directly inject preformed antibodies.
4. Directly inject immunosuppressants.
Elephantiasis in man is caused by
1. Ancylostoma duodenale
2. Ascaris lumbricoides
3. Dracunculus medinensis
4. Wuchereria bancrofti
Salmonella typhi causes:
1. An acute infection of intestine that causes high fever and weakness
2. Enlargement of spleen and pain in stomach
3. Rose coloured rashes on the body
4. All of the above
Read the following statements about cancer and mark the incorrect ones
| (i) | Ionising radiations like x-rays and UV rays and non-ionizing radiations like gamma rays cause DNA damage leading to neoplastic transformation. |
| (ii) | CT scan uses non-ionizing radiations to accurately detect pathological and physiological changes in the living tissue. |
| (iii) | Antibodies against cancer-specific antigents are also used for detection of certain cancers. |
| (iv) | Some of the chemotherapeutic drugs are specific for certain cancers. |
| 1. | (i), (ii) and (iii) | 2. | (i) and (ii) |
| 3. | (iii) and (iv) | 4. | (ii) and (iv) |
Choose the correct option regarding the drug, its source, and its effect on the body
|
|
Drug |
Source |
Effect |
|
1. |
Coke |
Erythroxylum coca |
CNS depressant |
|
2. |
Heroin |
Papaver somniferum |
Stimulant |
|
3. |
Hashish |
Cannabis sativa |
Hallucinogen |
|
4. |
Datura |
Jimson's weed |
Stimulant |
Read the following statements:
(i) The main antibody produced as a result of allergic reaction is lgA.
(ii) Modern-day lifestyle has resulted in lowering immunity and more sensitivity to allergens.
(iii) Recombinant DNA technology has allowed the production of antigenic polypeptides of pathogens in bacteria or yeasts.
(iv) Allergy is suppressed due to the release of histamine and serotonin.
(v) The drugs like anti-histamines, adrenaline, and steroids quickly reduce the symptoms of allergy.
Which of the above statements are incorrect?
1. (ii), (iii), (v)
2. (i), (iv)
3. (ii), (v)
4. (ii), (iii)
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