Biology

Why Do We Fall Ill?

Question:

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

Answer:

(i) Balanced diet. (ii) Disease free environment.
(iii) Proper sanitation.  (iv) Mental and social stability.

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Questions and Answers

Why Do We Fall Ill?

Q 1.

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

Answer

Q 2.

What are infectious agents? What are the different infectious agents?
Answer

Q 3.

What is an antibiotic ? Give its one example.

Answer

Q 4.

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

Answer

Q 5.

The signs and symptoms of a disease will depend on the tissue or organ which the microbe targets Justify the statement with two examples. [SAll – 2014]

Answer

Q 6.

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

Q 7.

Name the diseases that can spread through housefly.
Answer

Q 8.

Name any two diseases which are caused due to unprotected sexual intercourse.

Answer

Q 9.

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

Answer

Q 10.

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 ?

Answer

Q 11.

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

Answer

Q 12.

Common cold spreads faster and is difficult to control. Give reason. [SAII -2014]

Answer

Q 13.

Why taking an antibiotic is not effective in the common cold?
Answer

Q 14.

Give an example of fungal antibiotic.
Answer

Q 15.

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

Q 16.

Why do people staying in air-conditioned homes/offices catch cold more often?
Answer

Q 17.

Write three differences between Personal Health and Community Health.
Answer

Q 18.

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

Q 19.

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

Answer

Q 20.

State any two conditions essential for good health. [SAII-2014]

Answer

Q 21.

State any two conditions essential for being free of disease.

Answer

Q 22.

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

Q 23.

State any two conditions essential for good health.
Answer

Q 24.

Give examples of Acute diseases.
Answer

Q 25.

Give examples of fungal diseases.
Answer

Q 26.

What are antibodies?
Answer

Q 27.

What is colostrum? Why is mother's milk strongly advised to newborns?
Answer

Q 28.

Name any two groups of microorganisms from which antibiotics could be extracted.

Answer

Q 29.

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

Answer

Q 30.

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

Answer

Q 31.

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 ?

Answer

Q 32.

(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]

Answer

Q 33.

State two principles of treatment of a disease.

Answer

Q 34.

(a) What is immunisation ?
(b) Define immunity and vaccination.
(c) Define vaccine. .
(d) What type of diseases can be prevented through vaccination ? [SAII -2013]

Answer

Q 35.

What do you mean by active and passive immunisation ? [SAll – 2015]

Answer

Q 36.

Give the modes of transmission of each of the following diseases :
(i) Syphilis (ii) Tuberculosis (iii) Jaundice (iv) Japanese encephalitis [SAII -2012]

Answer

Q 37.

Why is immune system essential for our health ?

Answer

Q 38.

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

Answer

Q 39.

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

Answer

Q 40.

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

Answer

Q 41.

What are the different means by which infectious diseases are spread ?

Answer

Q 42.

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

Q 43.

Kidneys of a person do not filter urine properly. How does it affect physical, mental and social dimensions of that person?
Answer

Q 44.

(i) How do you define 'disease'? (ii) State and explain in brief the four major factors, which are the causes of disease.
Answer

Q 45.

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

Q 46.

What are acquired diseases?
Answer

Q 47.

What is 'germ theory of disease'? Who proposed it?
Answer

Q 48.

Give three examples of bacterial diseases.
Answer

Q 49.

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

Q 50.

What is immunisation?
Answer