Biology

Why Do We Fall Ill?

Question:

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 ?

Answer:

A person is most likely to fall sick when she is on a four-day fast after recovering from malaria and is taking care of someone suffering from chickenpox. There are following reasons for this :

  1. When a person gets a disease like malaria he has loss of appetite, vomiting and high fever. This leads to loss of body fluids and makes body very weak. Under such circumstances if she is  on a four day fast, then her defense system will be totally weak and she can even collapse.
  2.  With the weak immune system if she is taking care of someone suffering from chickenpox, then it is more likely that she may also get the disease.
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Why Do We Fall Ill?

Q 1.

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 2.

State any two conditions essential for being free of disease.

Q 3.

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

Q 4.

Give examples of fungal diseases.

Q 5.

Why are antibiotics not effective for viral disease ?

Q 6.

Give four examples of Chronic diseases.

Q 7.

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

Q 8.

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

Q 9.

What are acquired diseases?

Q 10.

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

Q 11.

What is antigen?

Q 12.

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 13.

What is immunisation?

Q 14.

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

Q 15.

State any two conditions essential for being free of disease.

Q 16.

Define antibiotic? Explain how it is able to control bacterial infections but not viral infections.

Q 17.

What do you mean by Phagocytosis?

Q 18.

Differentiate between allergy and autoimmune diseases.

Q 19.

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

Q 20.

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 21.

What are the different means by which infectious diseases are spread ? [SAII – 2011, 2013]

Q 22.

(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 23.

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

Q 24.

Name the diseases that can spread through housefly.

Q 25.

What are antibodies?

Q 26.

Why Colostrum is good for infants?

Q 27.

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 28.

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 29.

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

Q 30.

Differentiate between Acute Diseases and Chronic Diseases.

Q 31.

Give three examples of bacterial diseases.

Q 32.

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

Q 33.

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

Q 34.

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

Q 35.

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

Q 36.

List the diseases caused by viruses?

Q 37.

List the diseases caused by worms?

Q 38.

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

Q 39.

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

Q 40.

Why it is advisable to breast feed the baby for first few several weeks?

Q 41.

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

Q 42.

What is an antibiotic ? Give its one example.

Q 43.

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 44.

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

Q 45.

“On exposure with an infectious microbe does not necessarily mean developing noticeable disease”. Do you agree ? Explain with reason. If yes, how severe infections occur in our body ?

Q 46.

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

Q 47.

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 48.

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

Q 49.

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

Q 50.

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 ?