Biology

Why Do We Fall Ill?

Question:

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

Answer:

(i) An epidemic is the rapid and extensive spread of disease that affects many individuals simultaneously in a particular area. It is generally an infectious disease.
(ii)Liver is affected in jaundice.

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Why Do We Fall Ill?

Q 1.

Name the diseases that can spread through housefly.

Q 2.

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

Q 3.

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

Q 4.

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

Q 5.

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

Q 6.

What is an antibiotic ? Give its one example.

Q 7.

List the diseases caused by worms?

Q 8.

Give two examples of bacterial antibiotics.

Q 9.

What are antibodies?

Q 10.

What are the basic principles involved in medical treatment for diseases?

Q 11.

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

Q 12.

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

Q 13.

State two principles of treatment of a disease.

Q 14.

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

Q 15.

State any two conditions essential for good health.

Q 16.

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

Q 17.

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

Q 18.

Give three examples of bacterial diseases.

Q 19.

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

Q 20.

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

Q 21.

Differentiate between allergy and autoimmune diseases.

Q 22.

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

Q 23.

What is an antibiotic ? Give two examples.

Q 24.

Name any four diseases transmitted through vectors.

Q 25.

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 ?

Q 26.

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 27.

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

Q 28.

Why are antibiotics not effective for viral disease ?

Q 29.

Give examples of Acute diseases.

Q 30.

Name the pathogen causes peptic ulcer.

Q 31.

How do antibiotics (say Penicillin) work on bacteria but not on human beings?

Q 32.

What is antigen?

Q 33.

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

Q 34.

Many vaccines form the public health programme of childhood immunisation for preventing infectious disease. Name any two such diseases.

Q 35.

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

Q 36.

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

Q 37.

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

Q 38.

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

Q 39.

What causes Japanese encephalitis ? How it can be prevented ?

Q 40.

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]

Q 41.

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 42.

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 43.

(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 44.

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.

Q 45.

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

Q 46.

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 47.

Why is immune system essential for our health ?

Q 48.

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

Q 49.

State giving reasons whether the following statements are correct or not:

  1.  Our surrounding area should be free from stagnant water.
  2. Staying clean is not necessary as long as you eat a balanced diet.
  3.  Social equality and harmony are necessary for good health.

Q 50.

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