MEDIUM
12th CBSE
IMPORTANT
Earn 100
It is generally observed that the children who had suffered from chicken-pox in their childhood may not contract the same disease in their adulthood. Explain giving the reason the basis of such immunity in an individual. Name this kind of immunity.
Important Questions on Human Health and Disease
HARD
12th CBSE
IMPORTANT
What are interferons? Mention their role.
MEDIUM
12th CBSE
IMPORTANT
(a) What precaution(s) would you recommend to a patient requiring repeated blood transfusion?
(b) If the advice is not followed by the patient, there is an apprehension that the patient might contract a disease that would destroy the immune system of his/her body. Explain with the help of schematic diagram only how the immune system would get affected and destroyed.
EASY
12th CBSE
IMPORTANT
Name a human disease, its causal organism, symptoms (any three) and vector spread by intake of water and food contaminated by human faecal matter.
MEDIUM
12th CBSE
IMPORTANT
Why is there a fear amongst the guardians that their adolescent wards may get trapped in drug/alcohol abuse?
EASY
12th CBSE
IMPORTANT
Explain 'addiction' and 'dependence' in respect of drug/alcohol abuse in youth.
MEDIUM
12th CBSE
IMPORTANT
(i) How and at what stage does Plasmodium enter into the human body?
(ii) With the help of flow chart only shows the stages of asexual reproduction in the life cycle of the parasite in the infected human.
(iii) Why does the victim show symptoms of high fever?
EASY
12th CBSE
IMPORTANT
Name the pathogen that causes amoebiasis in humans. Give the symptoms and the mode of transmission of this disease.
MEDIUM
12th CBSE
IMPORTANT
(a) Why do the symptoms of malaria not appear immediately after the entry of sporozoites into the human body when bitten by female Anopheles? Explain.
(b) Give the specific name of the malaria parasite that causes malignant malaria in humans.
