Biology

Why Do We Fall Ill?

Question:

List any four essential factors that must be taken icare of by an individual for keeping good health.

Answer:

(i) Balanced diet. (ii) Disease free environment.
(iii) Proper sanitation.  (iv) Mental and social stability.

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Why Do We Fall Ill?

Q 1.

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

Q 2.

What is inflammation ? Write the symptoms of this in human body.

Q 3.

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

Q 4.

Give two examples of bacterial antibiotics.

Q 5.

What is an antibiotic ? Give its one example.

Q 6.

What is a balanced diet?

Q 7.

Name the vector that can cause sleeping sickness.

Q 8.

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

Q 9.

Name the pathogen causes peptic ulcer.

Q 10.

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

Q 11.

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

Q 12.

What is an antibiotic ? Give two examples.

Q 13.

(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 14.

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 15.

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

Q 16.

(i) How do you define 'disease'? (ii) State and explain in brief the four major factors, which are the causes of disease.

Q 17.

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 18.

Give examples of fungal diseases.

Q 19.

What is the scientific name of roundworm? Where do we find it commonly in the human body? Name the disease caused by it.

Q 20.

What do you mean by active and passive immunisation ? [SAll – 2015]

Q 21.

Classify infectious agents into different categories and also mention the diseases caused by them.

Q 22.

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

Q 23.

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 24.

What are Koch's Postulates?

Q 25.

Name the microbe which causes acne.

Q 26.

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

Q 27.

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

Q 28.

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 29.

Why are we advised to take blend and nourishing food when we are sick ?

Q 30.

Which amongst the two diseases : acute or chronic has adverse effect on the health of a person? Explain giving a suitable example.

Q 31.

(i) What is an epidemic disease ?
(ii) Which organ is affected if a person is suffering from jaundice ?

Q 32.

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

Q 33.

Differentiate between acute diseases and chronic diseases.

Q 34.

What precautions can you take in your school to reduce the incidence of infectious diseases ?

Q 35.

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

Q 36.

Why do some children fall ill more frequently than others living in the same locality ?

Q 37.

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 38.

Give four examples of Chronic diseases.

Q 39.

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

Q 40.

Name the protozoan pathogen that causes kala-azar.

Q 41.

Why are we normally advised to take bland and nourishing food when we are sick?

Q 42.

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

Q 43.

Write three differences between Personal Health and Community Health.

Q 44.

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

Q 45.

Name two diseases caused by Protozoans. What are their causal organisms ?

Q 46.

(i) Which bacterium causes peptic ulcers ?
(ii) Who discovered the above pathogen for the first time ?

Q 47.

Give four modes of transmission of AIDS.

Q 48.

How can we prevent water borne and vector borne infections ?

Q 49.

What causes Japanese encephalitis ? How it can be prevented ?

Q 50.

State any two conditions essential for good health. [SAII-2014]