Biology

Why Do We Fall Ill?

Question:

What is immunisation?

Answer:

Administering vaccines to prevent the disease is called immunisation. Immunisation is a technique to prevent infectious disease. In this technique, vaccines are given into the people so that they develop temporary or permanent immunity (Artificial Active Acquired Immunity) to fight against a particular disease.
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Why Do We Fall Ill?

Q 1.

What do you mean by immune response ? , [SAII – 2014]

Q 2.

Differentiate between acute diseases and chronic diseases.

Q 3.

Why are we normally advised, to take bland and nourishing food when we are sick ? [SAII – 2011, 2013]

Q 4.

What is a disease ? How many types of diseases have you studied ? Give examples.

Q 5.

Name the protozoan pathogen that causes kala-azar.

Q 6.

List the diseases caused by worms?

Q 7.

What is immunisation?

Q 8.

Why are kids and elderly people more vulnerable to cold/flu?

Q 9.

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 10.

Classify the following diseases as infectious or non-infectious :
(a) AIDS                        (b) Tuberculosis
(c) Cholera                  (d) High blood pressure
(e) Heart disease       (f) Pneumonia
(g) Cancer

Q 11.

Is there any difference between 'being healthy' and 'disease free'?

Q 12.

Give four examples of Chronic diseases.

Q 13.

List any two differences between infectious and non-infectious diseases. Write any one example of each disease.

Q 14.

Many vaccines form the public health programme of childhood immunisation for preventing infectious disease. Name any two such diseases.

Q 15.

State any two conditions essential for being free of disease.

Q 16.

(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 17.

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 18.

Why does intake of penicillin not affect human cells ? [SAll – 2014]

Q 19.

You have suffered from chickenpox, when you were in class three. Why will you not suffer from it again ? [SAII -2014]

Q 20.

Differentiate between communicable and non-communicable diseases. Give one example of each.

Q 21.

State any two conditions essential for good health.

Q 22.

Give three examples of bacterial diseases.

Q 23.

Majority of children in many parts of India are already immune to Hepatitis A by the time they are five years old. Why ?

Q 24.

What precautions will you take to justify “prevention is better than cure” ?

Q 25.

Name a disease which was earlier considered to be chronic but now can be treated in short duration?

Q 26.

Give two examples of bacterial antibiotics.

Q 27.

Name the vector that can cause sleeping sickness.

Q 28.

What are antibodies?

Q 29.

Why do people staying in air-conditioned homes/offices catch cold more often?

Q 30.

Write differences between 'Being Healthy' and 'Disease Free'.

Q 31.

Give two examples for each of the following :
(a) Acute diseases
(b) Chronic diseases
(c) Infectious diseases
(d) Non-infectious diseases.

Q 32.

What is an antibiotic ? Give two examples.

Q 33.

Give four modes of transmission of AIDS.

Q 34.

(i) What are the various ways to prevent the diseases ?
(ii) What is immunisation ?

Q 35.

Give the modes of transmission of each of the following diseases :
(i) Syphilis (ii) Tuberculosis (iii) Jaundice (iv) Japanese encephalitis [SAII -2012]

Q 36.

Becoming exposed to or infected with an infectious microbe (toes not necessarily mean developing noticeable disease. Explain.

Q 37.

What is a balanced diet?

Q 38.

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 39.

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 40.

What are acquired diseases?

Q 41.

Write few common signs and symptoms of a disease if a brain is affected.

Q 42.

What is 'germ theory of disease'? Who proposed it?

Q 43.

List the diseases caused by viruses?

Q 44.

Name the microbe which causes acne.

Q 45.

How do antibiotics (say Penicillin) work on bacteria but not on human beings?

Q 46.

Name the vector which causes dengue, chikungunya and yellow fever.

Q 47.

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 48.

What is colostrum? Why is mother's milk strongly advised to newborns?

Q 49.

What are the immunisation programmes available at the nearest health centre in your locality? Which of these diseases are the major health problems in your area?

Q 50.

Why Colostrum is good for infants?