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Read the given statements carefully.
(i) Innate immunity is a specific type of defence, that is present at the time of birth.
(ii) Malignant malaria is caused by Plasmodium falciparum.
(iii) Malaria could be confirmed by Widal test.
(iv) Active immunity is slow and takes time to give its full effective response.
(v) Saliva in the mouth acts as physiological barrier for pathogens.
Which of the above statements are correct?
  • a)
    (ii), (iv) and (v)
  • b)
    (i) and (iii)
  • c)
    (i) and (v)
  • d)
    (ii), (iii) and (v)
Correct answer is option 'A'. Can you explain this answer?
Most Upvoted Answer
Read the given statements carefully.(i) Innate immunity is a specific ...
The correct answer is option A: (ii), (iv), and (v).

Explanation:

(i) Innate immunity is a specific type of defence, that is present at the time of birth.
This statement is incorrect. Innate immunity is a non-specific type of defense mechanism that is present at birth. It provides the first line of defense against pathogens and is not specific to any particular pathogen. It includes physical barriers like the skin, mucous membranes, and chemical barriers like enzymes and antimicrobial peptides.

(ii) Malignant malaria is caused by Plasmodium falciparum.
This statement is true. Malignant malaria, also known as cerebral malaria, is a severe form of malaria caused by the Plasmodium falciparum parasite. It is characterized by the invasion of the brain by the parasite and can lead to coma and death if not treated promptly.

(iii) Malaria could be confirmed by Widal test.
This statement is incorrect. The Widal test is not used to confirm malaria. It is a serological test used to diagnose typhoid fever caused by the Salmonella bacteria. Malaria is diagnosed through microscopic examination of blood smears or through rapid diagnostic tests that detect specific malaria antigens.

(iv) Active immunity is slow and takes time to give its full effective response.
This statement is true. Active immunity is acquired when the immune system is exposed to a pathogen or a vaccine and produces its own immune response. This process takes time as the immune system needs to recognize the pathogen, activate immune cells, and produce antibodies. It usually takes several days to weeks for the immune response to reach its full effectiveness.

(v) Saliva in the mouth acts as a physiological barrier for pathogens.
This statement is true. Saliva contains various components that act as a physiological barrier for pathogens. It contains enzymes like lysozyme and lactoferrin that can kill or inhibit the growth of bacteria. It also contains antibodies and antimicrobial peptides that can neutralize or destroy pathogens. Additionally, saliva helps to wash away pathogens from the oral cavity, reducing the risk of infection.
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Read the given statements carefully.(i) Innate immunity is a specific ...
Malignant malaria is caused by plasmodium falciparum. The incubation period of plasmodium falciparum is about 12 days. recurrence of fever is after every 48 hours. Active immunity is developed when the person's own cells produce antibodies in response to infection.it is slow and takes time to give its full effective response. Saliva in the mouth acts as physiological barrier for pathogens. it contains lysozyme that attacks bacteria and dissolves their cells walls.
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Read the given statements carefully.(i) Innate immunity is a specific type of defence, that is present at the time of birth.(ii) Malignant malaria is caused by Plasmodium falciparum.(iii) Malaria could be confirmed by Widal test.(iv) Active immunity is slow and takes time to give its full effective response.(v) Saliva in the mouth acts as physiological barrier for pathogens.Which of the above statements are correct?a)(ii), (iv) and (v)b)(i) and (iii)c)(i) and (v)d)(ii), (iii) and (v)Correct answer is option 'A'. Can you explain this answer?
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