Question:
Why is immune system essential for our health ?
Answer:
The immune system of our body is a kind of defence mechanism to fight against pathogenic microbes. It has cells that are specialized to kill infecting microbes and keep our body healthy.
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.
Give two examples of bacterial antibiotics.
Q 3.
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 4.
Differentiate between communicable and non-communicable diseases. Give one example of each.
Q 5.
Name a disease which was earlier considered to be chronic but now can be treated in short duration?
Q 6.
Differentiate between acute diseases and chronic diseases.
Q 7.
(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 8.
Why Colostrum is good for infants?
Q 9.
Which amongst the two diseases : acute or chronic has adverse effect on the health of a person? Explain giving a suitable example.
Q 10.
Give an example of fungal antibiotic.
Q 11.
Name the vector which causes malaria.
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 inflammation ? Write the symptoms of this in human body.
Q 14.
Classify infectious agents into different categories and also mention the diseases caused by them.
Q 15.
Define Health? What do you interpret when we say a person is in good health?
Q 16.
In which of the following case do you think the long-term effects on your health are likely to be most unpleasant? a. if you get jaundice, b. if you get lice, c. if you get acne. Why?
Q 17.
Differentiate between Acute Diseases and Chronic Diseases.
Q 18.
Why are we normally advised to take bland and nourishing food when we are sick?
Q 19.
Name the vector that can cause sleeping sickness.
Q 20.
What do signs and symptoms indicate if a person is suffering from any disease ? [SAII -2014]
Q 21.
What is an antibiotic ? Give its one example.
Q 22.
Becoming exposed to or infected with an infectious microbe (toes not necessarily mean developing noticeable disease. Explain.
Q 23.
How can we prevent water borne and vector borne infections ?
Q 24.
What do you mean by immune response ? , [SAII – 2014]
Q 25.
What are congenital diseases? Give two examples of such disease.
Q 26.
Why is it important that we think of these categories of infectious agents?
Q 27.
Write differences between 'Being Healthy' and 'Disease Free'.
Q 28.
Name any four diseases transmitted through vectors.
Q 29.
List any four essential factors that must be taken icare of by an individual for keeping good health.
Q 30.
What is a disease ? How many types of diseases have you studied ? Give examples.
Q 31.
What precautions will you take to justify “prevention is better than cure” ?
Q 32.
Why do some children fall ill more frequently than others living in the same locality ?
Q 33.
Name the protozoan pathogen that causes kala-azar.
Q 34.
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 35.
(i) Which bacterium causes peptic ulcers ?
(ii) Who discovered the above pathogen for the first time ?
Q 36.
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 37.
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 38.
State any two conditions essential for being free of disease.
Q 39.
Are the answers to the above questions (Q2 and Q5) and necessarily the same or different? Why?
Q 40.
List any two differences between infectious and non-infectious diseases. Write any one example of each disease.
Q 41.
Why are kids and elderly people more vulnerable to cold/flu?
Q 42.
What is an antibiotic ? Give two examples.
Q 43.
Give four modes of transmission of AIDS.
Q 44.
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 45.
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 46.
What do you mean by active and passive immunisation ? [SAll – 2015]
Q 47.
Why are antibiotics not effective for viral disease ?
Q 48.
You have suffered from chickenpox, when you were in class three. Why will you not suffer from it again ? [SAII -2014]
Q 49.
Why making anti-viral medicines is harder than making anti-bacterial medicines ?
Q 50.
What are the different means by which infectious diseases are spread ?
