Biology

Why Do We Fall Ill?

Question:

What is antigen?

Answer:

When a pathogen invades our body, it releases toxins into bloodstream or in tissues. This toxin or foreign protein entering our body is called antigen.
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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.

What is an antibiotic ? Give its one example.

Q 3.

State any two conditions essential for being free of disease.

Q 4.

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

Q 5.

What is antigen?

Q 6.

Give four examples of Chronic diseases.

Q 7.

Give examples of fungal diseases.

Q 8.

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

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.

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

Q 11.

What is immunisation?

Q 12.

What do you mean by Phagocytosis?

Q 13.

Why are antibiotics not effective for viral disease ?

Q 14.

State any two conditions essential for being free of disease.

Q 15.

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

Q 16.

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

Q 17.

What are acquired diseases?

Q 18.

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

Q 19.

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 20.

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

Q 21.

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

Q 22.

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

Q 23.

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 24.

Differentiate between Acute Diseases and Chronic Diseases.

Q 25.

What are antibodies?

Q 26.

(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 27.

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 28.

Give three examples of bacterial diseases.

Q 29.

Why Colostrum is good for infants?

Q 30.

Differentiate between allergy and autoimmune diseases.

Q 31.

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

Q 32.

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 33.

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

Q 34.

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

Q 35.

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

Q 36.

List the diseases caused by viruses?

Q 37.

Name the pathogen causes peptic ulcer.

Q 38.

List the diseases caused by worms?

Q 39.

Name the diseases that can spread through housefly.

Q 40.

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 41.

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 42.

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

Q 43.

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

Q 44.

What is an antibiotic ? Give two examples.

Q 45.

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

Q 46.

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

Q 47.

What is the difference between symptoms and signs of a disease?

Q 48.

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

Q 49.

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

Q 50.

Name two diseases caused by Protozoans. What are their causal organisms ?