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.

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

Q 2.

Give two examples of bacterial antibiotics.

Q 3.

Differentiate between acute diseases and chronic diseases.

Q 4.

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 5.

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

Q 6.

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

Q 7.

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 8.

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 9.

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

Q 10.

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

Q 11.

Name the vector which causes malaria.

Q 12.

Why Colostrum is good for infants?

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.

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

Q 15.

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

Q 16.

Differentiate between Acute Diseases and Chronic Diseases.

Q 17.

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

Q 18.

What do you mean by immunity?

Q 19.

How can we prevent water borne and vector borne infections ?

Q 20.

(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 21.

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

Q 22.

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

Q 23.

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

Q 24.

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

Q 25.

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

Q 26.

Give an example of fungal antibiotic.

Q 27.

Name the vector that can cause sleeping sickness.

Q 28.

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

Q 29.

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

Q 30.

What is an antibiotic ? Give its one example.

Q 31.

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

Q 32.

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

Q 33.

State any two conditions essential for being free of disease.

Q 34.

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

Q 35.

Name the protozoan pathogen that causes kala-azar.

Q 36.

Name the vector which causes dengue, chikungunya and yellow fever.

Q 37.

What is an antibiotic ? Give two examples.

Q 38.

What do signs and symptoms indicate if a person is suffering from any disease ? [SAII -2014]

Q 39.

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

Q 40.

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

Q 41.

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

Q 42.

What is antigen?

Q 43.

What do you mean by Phagocytosis?

Q 44.

Name any four diseases transmitted through vectors.

Q 45.

Give four modes of transmission of AIDS.

Q 46.

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 47.

What is the purpose of vaccination ?

Q 48.

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

Q 49.

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

Q 50.

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 ?