Biology

Why Do We Fall Ill?

Question:

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

Answer:

Immune response is the reaction of the body’s immune system to foreign cells or substances that cause disease or may even be potentially dangerous. This response involves the production
of cells (lymphocytes) and chemicals (antibodies) designed to defend the body against the pathogen.

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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.

Give four examples of Chronic diseases.

Q 6.

Give examples of fungal diseases.

Q 7.

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

Q 8.

What is antigen?

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 do you mean by Phagocytosis?

Q 12.

Why are antibiotics not effective for viral disease ?

Q 13.

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

Q 14.

What is immunisation?

Q 15.

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 16.

What are acquired diseases?

Q 17.

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

Q 18.

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

Q 19.

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 20.

State any two conditions essential for being free of disease.

Q 21.

What are antibodies?

Q 22.

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

Q 23.

(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 24.

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 25.

Differentiate between Acute Diseases and Chronic Diseases.

Q 26.

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

Q 27.

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

Q 28.

Why Colostrum is good for infants?

Q 29.

Differentiate between allergy and autoimmune diseases.

Q 30.

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

Q 31.

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 32.

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

Q 33.

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

Q 34.

Give three examples of bacterial diseases.

Q 35.

List the diseases caused by worms?

Q 36.

Name the diseases that can spread through housefly.

Q 37.

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 38.

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

Q 39.

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

Q 40.

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

Q 41.

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

Q 42.

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

Q 43.

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

Q 44.

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 45.

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

Q 46.

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

Q 47.

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

Q 48.

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

Q 49.

Give examples of Acute diseases.

Q 50.

List the diseases caused by viruses?