Biology

Why Do We Fall Ill?

Question:

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

Answer:

(i) Sleeping sickness caused by Trypanosoma, Malaria by Plasmodium.
(ii) Kala-azar caused by Leishmania.

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Questions and Answers

Why Do We Fall Ill?

Q 1.

Name the diseases that can spread through housefly.
Answer

Q 2.

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

Answer

Q 3.

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

Q 4.

What are antibodies?
Answer

Q 5.

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

Answer

Q 6.

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 7.

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

Answer

Q 8.

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

Q 9.

What is an antibiotic ? Give its one example.

Answer

Q 10.

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 11.

State two principles of treatment of a disease.

Answer

Q 12.

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

Answer

Q 13.

Write three differences between Personal Health and Community Health.
Answer

Q 14.

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 15.

State any two conditions essential for good health.
Answer

Q 16.

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

Q 17.

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

Q 18.

Name any four diseases transmitted through vectors.

Answer

Q 19.

State any two conditions essential for being free of disease.

Answer

Q 20.

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 ?

Answer

Q 21.

(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 22.

Conduct a survey in your neighbourhood to find out what the three most common diseases are. Suggest three steps that could be taken by your local authorities to bring down the incidence of these diseases.

Answer

Q 23.

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 24.

Why are antibiotics not effective for viral disease ?

Answer

Q 25.

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

Answer

Q 26.

State any two conditions essential for being free of disease.
Answer

Q 27.

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

Q 28.

Give examples of Acute diseases.
Answer

Q 29.

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

Answer

Q 30.

Write few common signs and symptoms of a disease if a brain is affected.
Answer

Q 31.

Give examples of fungal diseases.
Answer

Q 32.

List the diseases caused by worms?
Answer

Q 33.

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 34.

Why is it not necessary to give Hepatitis A vaccine to children?

Answer

Q 35.

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

Q 36.

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

Answer

Q 37.

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

Answer

Q 38.

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

Answer

Q 39.

Why is immune system essential for our health ?

Answer

Q 40.

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

Answer

Q 41.

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

Q 42.

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

Q 43.

How do we identify a disease?
Answer

Q 44.

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

Q 45.

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

Answer

Q 46.

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 47.

What do you mean by disease symptoms ? Explain giving two examples.

Answer

Q 48.

Why does intake of penicillin not affect human cells ? [SAll – 2014]

Answer

Q 49.

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

Answer

Q 50.

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

Answer