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.
Why Do We Fall Ill?
Q 1.
Name the pathogen causes peptic ulcer.
Q 2.
What do you mean by immune response ? , [SAII – 2014]
Q 3.
What is immunisation?
Q 4.
Name the vector that can cause sleeping sickness.
Q 5.
What is the purpose of vaccination ?
Q 6.
(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]
Q 7.
What are Koch's Postulates?
Q 9.
(i) Which bacterium causes peptic ulcers ?
(ii) Who discovered the above pathogen for the first time ?
Q 10.
Name the target organs for the following diseases :
(a) Hepatitis targets…………
(b) Fits or unconsciousness targets…………
(c) Pneumonia targets…………
(d) Fungal disease targets…………
Q 11.
Give four examples of Chronic diseases.
Q 12.
Name the protozoan pathogen that causes kala-azar.
Q 13.
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 14.
Why is it not necessary to give Hepatitis A vaccine to children?
Q 15.
Give two examples for each of the following :
(a) Acute diseases
(b) Chronic diseases
(c) Infectious diseases
(d) Non-infectious diseases.
Q 16.
Differentiate between acute diseases and chronic diseases.
Q 17.
What precautions can you take in your school to reduce the incidence of infectious diseases ?
Q 18.
What is a disease ? How many types of diseases have you studied ? Give examples.
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.
Name a disease which was earlier considered to be chronic but now can be treated in short duration?
Q 21.
List the diseases caused by viruses?
Q 22.
What is the scientific name of roundworm? Where do we find it commonly in the human body? Name the disease caused by it.
Q 23.
Why it is advisable to breast feed the baby for first few several weeks?
Q 24.
Write differences between 'Being Healthy' and 'Disease Free'.
Q 25.
Which amongst the two diseases : acute or chronic has adverse effect on the health of a person? Explain giving a suitable example.
Q 26.
Give four modes of transmission of AIDS.
Q 27.
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 28.
In which of the following case do you think the long-term effects on your health are likely to be most unpleasant ?
- if you get jaundice ?
- if you get lice ?
- if you get acne. Why ?
Q 29.
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 30.
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 31.
Classify infectious agents into different categories and also mention the diseases caused by them.
Q 32.
What precautions will you take to justify “prevention is better than cure” ?
Q 33.
Why is immune system essential for our health ?
Q 34.
Becoming exposed to or infected with an infectious microbe (toes not necessarily mean developing noticeable disease. Explain.
Q 35.
Why does intake of penicillin not affect human cells ? [SAll – 2014]
Q 36.
You have suffered from chickenpox, when you were in class three. Why will you not suffer from it again ? [SAII -2014]
Q 37.
Why making anti-viral medicines is harder than making anti-bacterial medicines ?
Q 38.
State giving reasons whether the following statements are correct or not:
- Our surrounding area should be free from stagnant water.
- Staying clean is not necessary as long as you eat a balanced diet.
- Social equality and harmony are necessary for good health.
Q 39.
Differentiate between communicable and non-communicable diseases. Give one example of each.
Q 40.
Define Health? What do you interpret when we say a person is in good health?
Q 41.
Are the answers to the above questions (Q2 and Q5) and necessarily the same or different? Why?
Q 42.
A hefty boy of 12 years often picks fights with others. Do you think he is in good health? If so, then explain your answer.
Q 43.
Give examples of Acute diseases.
Q 44.
What are acquired diseases?
Q 45.
Write few common signs and symptoms of a disease if a brain is affected.
Q 46.
List any two differences between infectious and non-infectious diseases. Write any one example of each disease.
Q 47.
Give three examples of bacterial diseases.
Q 48.
Give examples of fungal diseases.
Q 49.
List the diseases caused by worms?
Q 50.
Why is it important that we think of these categories of infectious agents?
