Biology

Why Do We Fall Ill?

Question:

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

Answer:

important-question-for-cbse-class-9-science-why-do-we-fall-iii-7

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Why Do We Fall Ill?

Q 1.

State any two conditions essential for being free of disease.

Q 2.

Under which of the following conditions are you most likely to fall sick ?
(a) when you are taking examinations.
(b) when you have travelled by bus and train for two days.
(c) when your friend is suffering from measles. Why ?

Q 3.

What is an antibiotic ? Give its one example.

Q 4.

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 5.

Name the target organs for the following diseases :
(a) Hepatitis targets…………
(b) Fits or unconsciousness targets…………
(c) Pneumonia targets…………
(d) Fungal disease targets…………

Q 6.

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

Q 7.

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 8.

Who discovered ‘vaccine’ for the first time ? Name two diseases which can be prevented by using vaccines.

Q 9.

Are the answers to the above questions (Q2 and Q5) and necessarily the same or different? Why?

Q 10.

In which of the following case do you think the long-term effects on your health are likely to be most unpleasant? a. if you get jaundice, b. if you get lice, c. if you get acne. Why?

Q 11.

Give three examples of bacterial diseases.

Q 12.

Why is it important that we think of these categories of infectious agents?

Q 13.

Give two examples of bacterial antibiotics.

Q 14.

What is the alternate name of brain fever? Which vector is responsible for this disease?

Q 15.

Name the vector which causes malaria.

Q 16.

What is antigen?

Q 17.

What is an antibiotic ? Give two examples.

Q 18.

Name any four diseases transmitted through vectors.

Q 19.

Give four modes of transmission of AIDS.

Q 20.

How can we prevent water borne and vector borne infections ?

Q 21.

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 22.

Why is AIDS considered to be a ‘Syndrome’ and not a disease ?

Q 23.

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 24.

Give examples of Acute diseases.

Q 25.

Differentiate between Acute Diseases and Chronic Diseases.

Q 26.

What are congenital diseases? Give two examples of such disease.

Q 27.

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

Q 28.

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

Q 29.

List the diseases caused by worms?

Q 30.

Explain why antibiotics are more effective in curing bacterial diseases than viral diseases.

Q 31.

Why taking an antibiotic is not effective in the common cold?

Q 32.

What are antibodies?

Q 33.

How do Skin, Hairs, Saliva form the first line of defence against diseases?

Q 34.

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

Q 35.

Name any two diseases which are caused due to unprotected sexual intercourse.

Q 36.

State any two conditions essential for being free of disease.

Q 37.

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

Q 38.

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 39.

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

Q 40.

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

Q 41.

Why making anti-viral medicines is harder than making anti-bacterial medicines ?

Q 42.

State giving reasons whether the following statements are correct or not:

  1.  Our surrounding area should be free from stagnant water.
  2. Staying clean is not necessary as long as you eat a balanced diet.
  3.  Social equality and harmony are necessary for good health.

Q 43.

Kidneys of a person do not filter urine properly. How does it affect physical, mental and social dimensions of that person?

Q 44.

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

Q 45.

How do we identify a disease?

Q 46.

What is the difference between symptoms and signs of a disease?

Q 47.

Give four examples of Chronic diseases.

Q 48.

What are acquired diseases?

Q 49.

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

Q 50.

What are Koch's Postulates?