Biology

Why Do We Fall Ill?

Question:

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

Answer:

Yes the answers to these questions are inter-related. Personal and community hygiene and cleanliness reduces the risk of getting any infection or being unhealthy. Physical exercise keeps the body function normally and prepares it to fight against any 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.

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 4.

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 5.

Name the vector which causes malaria.

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.

Differentiate between acute diseases and chronic diseases.

Q 8.

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

Q 9.

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

Q 10.

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

Q 11.

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

Q 12.

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

Q 13.

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 14.

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

Q 15.

Why Colostrum is good for infants?

Q 16.

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

Q 17.

How can we prevent water borne and vector borne infections ?

Q 18.

(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 19.

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

Q 20.

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

Q 21.

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

Q 22.

Differentiate between Acute Diseases and Chronic Diseases.

Q 23.

What do you mean by immunity?

Q 24.

What do you mean by Phagocytosis?

Q 25.

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

Q 26.

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

Q 27.

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

Q 28.

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

Q 29.

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

Q 30.

State any two conditions essential for being free of disease.

Q 31.

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

Q 32.

Name the protozoan pathogen that causes kala-azar.

Q 33.

Give an example of fungal antibiotic.

Q 34.

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

Q 35.

Name the vector that can cause sleeping sickness.

Q 36.

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

Q 37.

What is an antibiotic ? Give its one example.

Q 38.

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

Q 39.

What is an antibiotic ? Give two examples.

Q 40.

Name any four diseases transmitted through vectors.

Q 41.

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

Q 42.

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

Q 43.

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

Q 44.

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

Q 45.

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

Q 46.

Give four examples of Chronic diseases.

Q 47.

Name the microbe which causes acne.

Q 48.

A doctor/nurse/health-worker is exposed to more sick people than others in the community. Find out how she/he avoids getting sick herself/himself.

Q 49.

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

Q 50.

What is antigen?