Question:
What do you mean by immune response ? , [SAII – 2014]
Answer:
Immune response is the reaction of the body’s immune system to foreign cells or substances that cause disease or may even be potentially dangerous. This response involves the production
of cells (lymphocytes) and chemicals (antibodies) designed to defend the body against the pathogen.
Why Do We Fall Ill?
Q 1.
What do you mean by immune response ? , [SAII – 2014]
Q 2.
Name the protozoan pathogen that causes kala-azar.
Q 3.
What is a disease ? How many types of diseases have you studied ? Give examples.
Q 4.
Differentiate between communicable and non-communicable diseases. Give one example of each.
Q 5.
State any two conditions essential for good health.
Q 6.
What is immunisation?
Q 7.
Give two examples for each of the following :
(a) Acute diseases
(b) Chronic diseases
(c) Infectious diseases
(d) Non-infectious diseases.
Q 8.
Give four modes of transmission of AIDS.
Q 9.
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 10.
You have suffered from chickenpox, when you were in class three. Why will you not suffer from it again ? [SAII -2014]
Q 11.
Name the microbe which causes acne.
Q 12.
Name the vector which causes malaria.
Q 13.
Majority of children in many parts of India are already immune to Hepatitis A by the time they are five years old. Why ?
Q 14.
What do signs and symptoms indicate if a person is suffering from any disease ? [SAII -2014]
Q 15.
(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 16.
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 17.
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 18.
List the diseases caused by viruses?
Q 19.
List the diseases caused by worms?
Q 20.
Name the vector that can cause sleeping sickness.
Q 21.
What are antibodies?
Q 22.
Why Colostrum is good for infants?
Q 23.
Many vaccines form the public health programme of childhood immunisation for preventing infectious disease. Name any two such diseases.
Q 24.
(i) What is an epidemic disease ?
(ii) Which organ is affected if a person is suffering from jaundice ?
Q 25.
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 26.
State giving reasons whether the following statements are correct or not:
- Our surrounding area should be free from stagnant water.
- Staying clean is not necessary as long as you eat a balanced diet.
- Social equality and harmony are necessary for good health.
Q 27.
Is there any difference between 'being healthy' and 'disease free'?
Q 28.
List any two differences between infectious and non-infectious diseases. Write any one example of each disease.
Q 29.
Name the pathogen causes peptic ulcer.
Q 30.
State any two conditions essential for good health. [SAII-2014]
Q 31.
State any two conditions essential for being free of disease.
Q 32.
Why are we normally advised, to take bland and nourishing food when we are sick ? [SAII – 2011, 2013]
Q 33.
(i) What are the various ways to prevent the diseases ?
(ii) What is immunisation ?
Q 34.
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 35.
AIDS is a fatal disease. Explain why. [SAII – 2014]
Q 36.
What is a balanced diet?
Q 37.
(i) How do you define 'disease'? (ii) State and explain in brief the four major factors, which are the causes of disease.
Q 38.
How do we identify a disease?
Q 39.
What are Koch's Postulates?
Q 40.
Give two examples of bacterial antibiotics.
Q 41.
Why it is advisable to breast feed the baby for first few several weeks?
Q 42.
Why are kids and elderly people more vulnerable to cold/flu?
Q 43.
What causes Japanese encephalitis ? How it can be prevented ?
Q 44.
Why does intake of penicillin not affect human cells ? [SAll – 2014]
Q 45.
Are the answers to the above questions (Q2 and Q5) and necessarily the same or different? Why?
Q 46.
Differentiate between Acute Diseases and Chronic Diseases.
Q 47.
Name a disease which was earlier considered to be chronic but now can be treated in short duration?
Q 48.
What precautions can you take in your school to reduce the incidence of infectious diseases?
Q 49.
Why do people staying in air-conditioned homes/offices catch cold more often?
Q 50.
Why are we advised to take blend and nourishing food when we are sick ?
