Question:
What do you mean by immune response ? , [SAII – 2014]
Answer:
Immune response is the reaction of the body’s immune system to foreign cells or substances that cause disease or may even be potentially dangerous. This response involves the production
of cells (lymphocytes) and chemicals (antibodies) designed to defend the body against the pathogen.
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.
Differentiate between acute diseases and chronic diseases.
Q 21.
What do you mean by active and passive immunisation ? [SAll – 2015]
Q 22.
Classify infectious agents into different categories and also mention the diseases caused by them.
Q 23.
Why does intake of penicillin not affect human cells ? [SAll – 2014]
Q 24.
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 25.
What are Koch's Postulates?
Q 26.
Name the microbe which causes acne.
Q 27.
How do antibiotics (say Penicillin) work on bacteria but not on human beings?
Q 28.
Why taking an antibiotic is not effective in the common cold?
Q 29.
Why are we normally advised to take bland and nourishing food when we are sick?
Q 30.
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 31.
Why are we advised to take blend and nourishing food when we are sick ?
Q 32.
Which amongst the two diseases : acute or chronic has adverse effect on the health of a person? Explain giving a suitable example.
Q 33.
(i) What is an epidemic disease ?
(ii) Which organ is affected if a person is suffering from jaundice ?
Q 34.
Why are we normally advised, to take bland and nourishing food when we are sick ? [SAII – 2011, 2013]
Q 35.
What precautions can you take in your school to reduce the incidence of infectious diseases ?
Q 36.
Explain giving reasons :
(a) Balanced diet is necessary for maintaining healthy body.
(b) Health of an organism depends upon the surrounding environmental conditions.
(c) Our surrounding area should be free of stagnant water.
(d) Social harmony and good economic conditions are necessary for good health.
Q 37.
Becoming exposed to or infected with an infectious microbe (toes not necessarily mean developing noticeable disease. Explain.
Q 38.
Why do some children fall ill more frequently than others living in the same locality ?
Q 39.
Why making anti-viral medicines is harder than making anti-bacterial medicines ?
Q 40.
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 41.
Give four examples of Chronic diseases.
Q 42.
List any two differences between infectious and non-infectious diseases. Write any one example of each disease.
Q 43.
Name the protozoan pathogen that causes kala-azar.
Q 44.
Give an example of fungal antibiotic.
Q 45.
What is the alternate name of brain fever? Which vector is responsible for this disease?
Q 46.
Name the vector which causes dengue, chikungunya and yellow fever.
Q 47.
Name the vectors which can cause rabies.
Q 48.
Why is it not necessary to give Hepatitis A vaccine to children?
Q 49.
Why Colostrum is good for infants?
Q 50.
Why do people staying in air-conditioned homes/offices catch cold more often?
