Question:
Why do people staying in air-conditioned homes/offices catch cold more often?
Answer:
The indoor climate due to air-conditioning is drier due to which the cold virus can stay longer in air infecting more people.
Why Do We Fall Ill?
Q 1.
Give two examples for each of the following :
(a) Acute diseases
(b) Chronic diseases
(c) Infectious diseases
(d) Non-infectious diseases.
Q 2.
What is inflammation ? Write the symptoms of this in human body.
Q 3.
Name a disease which was earlier considered to be chronic but now can be treated in short duration?
Q 4.
Give two examples of bacterial antibiotics.
Q 5.
What is an antibiotic ? Give its one example.
Q 6.
What is a balanced diet?
Q 7.
Name the vector that can cause sleeping sickness.
Q 8.
What is '
germ theory of disease'? Who proposed it?
Q 9.
Name the pathogen causes peptic ulcer.
Q 10.
What is the scientific name of roundworm? Where do we find it commonly in the human body? Name the disease caused by it.
Q 11.
Many vaccines form the public health programme of childhood immunisation for preventing infectious disease. Name any two such diseases.
Q 12.
Majority of children in many parts of India are already immune to Hepatitis A by the time they are five years old. Why ?
Q 13.
What is an antibiotic ? Give two examples.
Q 14.
(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 15.
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 16.
Who discovered ‘vaccine’ for the first time ? Name two diseases which can be prevented by using vaccines.
Q 17.
(i) How do you define 'disease'? (ii) State and explain in brief the four major factors, which are the causes of disease.
Q 18.
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 19.
Give examples of fungal diseases.
Q 20.
What do you mean by active and passive immunisation ? [SAll – 2015]
Q 21.
Classify infectious agents into different categories and also mention the diseases caused by them.
Q 22.
Why does intake of penicillin not affect human cells ? [SAll – 2014]
Q 23.
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 24.
What are Koch's Postulates?
Q 25.
Name the microbe which causes acne.
Q 26.
How do antibiotics (say Penicillin) work on bacteria but not on human beings?
Q 27.
Why taking an antibiotic is not effective in the common cold?
Q 28.
Why are we normally advised to take bland and nourishing food when we are sick?
Q 29.
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 30.
Why are we advised to take blend and nourishing food when we are sick ?
Q 31.
Which amongst the two diseases : acute or chronic has adverse effect on the health of a person? Explain giving a suitable example.
Q 32.
(i) What is an epidemic disease ?
(ii) Which organ is affected if a person is suffering from jaundice ?
Q 33.
Why are we normally advised, to take bland and nourishing food when we are sick ? [SAII – 2011, 2013]
Q 34.
Differentiate between acute diseases and chronic diseases.
Q 35.
What precautions can you take in your school to reduce the incidence of infectious diseases ?
Q 36.
Becoming exposed to or infected with an infectious microbe (toes not necessarily mean developing noticeable disease. Explain.
Q 37.
Why do some children fall ill more frequently than others living in the same locality ?
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.
Give four examples of Chronic diseases.
Q 40.
List any two differences between infectious and non-infectious diseases. Write any one example of each disease.
Q 41.
Name the protozoan pathogen that causes kala-azar.
Q 42.
What is the alternate name of brain fever? Which vector is responsible for this disease?
Q 43.
Name the vector which causes dengue, chikungunya and yellow fever.
Q 44.
Name the vectors which can cause rabies.
Q 45.
Why is it not necessary to give Hepatitis A vaccine to children?
Q 46.
Write three differences between Personal Health and Community Health.
Q 47.
Write differences between 'Being Healthy' and 'Disease Free'.
Q 48.
Name any two groups of microorganisms from which antibiotics could be extracted.
Q 49.
Name any two diseases which are caused due to unprotected sexual intercourse.
Q 50.
Name two diseases caused by Protozoans. What are their causal organisms ?
