Question:
Name the vector which causes dengue, chikungunya and yellow fever.
Answer:
Aedes aegypti mosquito
Why Do We Fall Ill?
Q 1.
What do you mean by immune response ? , [SAII – 2014]
Q 2.
Name the pathogen causes peptic ulcer.
Q 3.
What is immunisation?
Q 4.
What is the purpose of vaccination ?
Q 5.
Name the protozoan pathogen that causes kala-azar.
Q 6.
Name the vector that can cause sleeping sickness.
Q 7.
Why is it not necessary to give Hepatitis A vaccine to children?
Q 8.
(i) Which bacterium causes peptic ulcers ?
(ii) Who discovered the above pathogen for the first time ?
Q 9.
Differentiate between acute diseases and chronic diseases.
Q 10.
(i) Why a person suffering from AIDS cannot fight even small infections ?
(ii) In a slum area, many people are suffering from malaria. Mention any two unhygienic conditions that must be prevailing in that locality.
(iii) Why female Anopheles mosquito feeds on human blood ? [SAII – 2014]
Q 11.
What is a disease ? How many types of diseases have you studied ? Give examples.
Q 12.
List any three reasons why you would think that you are sick and ought to see a doctor. If only one of these symptoms were present, would you still go to the doctor? Why or why not?
Q 13.
Name a disease which was earlier considered to be chronic but now can be treated in short duration?
Q 14.
What are Koch's Postulates?
Q 15.
A doctor/nurse/health-worker is exposed to more sick people than others in the community. Find out how she/he avoids getting sick herself/himself.
Q 17.
Why it is advisable to breast feed the baby for first few several weeks?
Q 18.
Under which of the following conditions is a person most likely to fall sick ?
(a) When she is recovering from malaria.
(b) When she has recovered from malaria and is taking care of someone suffering from
chickenpox.
(c) When she is on a four-day fast after recovering from malaria and is taking care of someone suffering from chickenpox. Why ?
Q 19.
What precautions can you take in your school to reduce the incidence of infectious diseases ?
Q 20.
Why is immune system essential for our health ?
Q 21.
Define Health? What do you interpret when we say a person is in good health?
Q 22.
Give four examples of Chronic diseases.
Q 23.
What are acquired diseases?
Q 24.
List the diseases caused by viruses?
Q 25.
List the diseases caused by worms?
Q 26.
What is the scientific name of roundworm? Where do we find it commonly in the human body? Name the disease caused by it.
Q 27.
Why do people staying in air-conditioned homes/offices catch cold more often?
Q 28.
Differentiate between allergy and autoimmune diseases.
Q 29.
Name any two groups of microorganisms from which antibiotics could be extracted.
Q 30.
List any four essential factors that must be taken icare of by an individual for keeping good health.
Q 31.
The signs and symptoms of a disease will depend on the tissue or organ which the microbe targets Justify the statement with two examples. [SAll – 2014]
Q 32.
(i) What are the various ways to prevent the diseases ?
(ii) What is immunisation ?
Q 33.
State two principles of treatment of a disease.
Q 34.
List any three reasons why you would think that you are sick and ought to see a doctor. If only one of these symptoms were present, would you still go to the doctor ? Why or why not ?
Q 35.
(a) What is immunisation ?
(b) Define immunity and vaccination.
(c) Define vaccine. .
(d) What type of diseases can be prevented through vaccination ? [SAII -2013]
Q 36.
Conduct a survey in your neighbourhood to find out what the three most common diseases are. Suggest three steps that could be taken by your local authorities to bring down the incidence of these diseases.
Q 37.
A baby is not able to tell her / his caretakers that she / he is sick. What would help us to find out:
(a) that the baby is sick ?
(b) what is the sickness ?
Q 38.
Why is AIDS considered to be a ‘Syndrome’ and not a disease ?
Q 39.
Name the target organs for the following diseases :
(a) Hepatitis targets…………
(b) Fits or unconsciousness targets…………
(c) Pneumonia targets…………
(d) Fungal disease targets…………
Q 40.
What do you mean by disease symptoms ? Explain giving two examples.
Q 41.
What precautions will you take to justify “prevention is better than cure” ?
Q 42.
Explain giving reasons :
(a) Balanced diet is necessary for maintaining healthy body.
(b) Health of an organism depends upon the surrounding environmental conditions.
(c) Our surrounding area should be free of stagnant water.
(d) Social harmony and good economic conditions are necessary for good health.
Q 43.
Becoming exposed to or infected with an infectious microbe (toes not necessarily mean developing noticeable disease. Explain.
Q 44.
Why do some children fall ill more frequently than others living in the same locality ?
Q 45.
Why does intake of penicillin not affect human cells ? [SAll – 2014]
Q 46.
You have suffered from chickenpox, when you were in class three. Why will you not suffer from it again ? [SAII -2014]
Q 47.
Why making anti-viral medicines is harder than making anti-bacterial medicines ?
Q 48.
What is a balanced diet?
Q 49.
A hefty boy of 12 years often picks fights with others. Do you think he is in good health? If so, then explain your answer.
Q 50.
What is the difference between symptoms and signs of a disease?
