Biology

Why Do We Fall Ill?

Question:

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 ?

Answer:

(a) The following symptoms will help us to find out that the baby is sick :
(i) Repeated crying and not responding to any stimuli.
(ii) High body temperature.
(iii) Loose motions.
(iv)Drooping of eyes.
(v) Redness of eyes.
(b) The following signs will help us to find out what is the sickness :
(i) Yellowing of eyes, pale skin and passing of yellow urine indicate that baby is suffering from jaundice.
(ii) Redness in the eye and persistent rubbing of eyes indicate about eye-flu.
(iii) Gripping pain in the stomach, loose skin and repeated loose motions indicates about diarrhoea.
(iV) High fever, headache, nausea, muscular pains and feeling very cold and shivering indicates about malaria.
(v) If only fever is there with no other visible symptoms then laboratory tests are to be done which will reveal about the signs of any disease.

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Why Do We Fall Ill?

Q 1.

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

Q 2.

What is an antibiotic ? Give its one example.

Q 3.

What are infectious agents? What are the different infectious agents?

Q 4.

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

Q 5.

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 6.

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

Q 7.

Name the diseases that can spread through housefly.

Q 8.

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

Q 9.

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 10.

Common cold spreads faster and is difficult to control. Give reason. [SAII -2014]

Q 11.

Give an example of fungal antibiotic.

Q 12.

Write three differences between Personal Health and Community Health.

Q 13.

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

Q 14.

State any two conditions essential for being free of disease.

Q 15.

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 16.

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

Q 17.

State any two conditions essential for good health.

Q 18.

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

Q 19.

What are antibodies?

Q 20.

(a) What are epidemic and endemic diseases? (b) Which organ is affected if a person is suffering from jaundice?

Q 21.

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

Q 22.

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

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.

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

Q 25.

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

Q 26.

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 27.

State two principles of treatment of a disease.

Q 28.

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 29.

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

Q 30.

Why is immune system essential for our health ?

Q 31.

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

Q 32.

What are the different means by which infectious diseases are spread ?

Q 33.

Define Health? What do you interpret when we say a person is in good health?

Q 34.

Give examples of Acute diseases.

Q 35.

Give examples of fungal diseases.

Q 36.

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

Q 37.

Why is it not necessary to give Hepatitis A vaccine to children?

Q 38.

Name any two groups of microorganisms from which antibiotics could be extracted.

Q 39.

(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 40.

In which of the following case do you think the long-term effects on your health are likely to be most unpleasant ?

  •  if you get jaundice ?
  •  if you get lice ?
  •  if you get acne. Why ?

 

Q 41.

How many times did you fall ill in the last one year ? What were the illnesses ?  (a) Think of one change you could make in your habits in order to avoid any/most of the above illnesses.
(b) Think of one change you would wish for in your surroundings in order  to avoid any/most of the above illnesses.

Q 42.

(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 43.

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

Q 44.

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

Q 45.

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

Q 46.

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

Q 47.

State any two conditions essential for being free of disease.

Q 48.

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 49.

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

Q 50.

How do we identify a disease?