Biology

Why Do We Fall Ill?

Question:

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

Answer:

(a) Viral fever, Flu
(b) Elephantiasis, Tuberculosis (TB)
(c) Smallpox, Chickenpox
(d) Diabetes, Goitre

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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.

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

Q 5.

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 6.

Name the vector which causes malaria.

Q 7.

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

Q 8.

Differentiate between acute diseases and chronic diseases.

Q 9.

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

Q 10.

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

Q 11.

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

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.

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

Q 15.

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

Q 16.

Why Colostrum is good for infants?

Q 17.

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

Q 18.

How can we prevent water borne and vector borne infections ?

Q 19.

(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 20.

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

Q 21.

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

Q 22.

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

Q 23.

Differentiate between Acute Diseases and Chronic Diseases.

Q 24.

What do you mean by immunity?

Q 25.

What do you mean by Phagocytosis?

Q 26.

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

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.

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

Q 40.

What is an antibiotic ? Give two examples.

Q 41.

Name any four diseases transmitted through vectors.

Q 42.

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

Q 43.

Give four modes of transmission of AIDS.

Q 44.

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

Q 45.

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

Q 46.

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

Q 47.

Give four examples of Chronic diseases.

Q 48.

Name the microbe which causes acne.

Q 49.

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 50.

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