Question:
What is antigen?
Answer:
When a pathogen invades our body, it releases toxins into bloodstream or in tissues. This toxin or foreign protein entering our body is called antigen.
Why Do We Fall Ill?
Q 1.
What do you mean by immune response ? , [SAII – 2014]
Q 2.
Name the pathogen causes peptic ulcer.
Q 3.
What are the different means by which infectious diseases are spread?
Q 4.
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 5.
Are the answers to the above questions (Q2 and Q5) and necessarily the same or different? Why?
Q 7.
Name the target organs for the following diseases :
(a) Hepatitis targets…………
(b) Fits or unconsciousness targets…………
(c) Pneumonia targets…………
(d) Fungal disease targets…………
Q 8.
Name the diseases that can spread through housefly.
Q 9.
(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 10.
What are infectious agents? What are the different infectious agents?
Q 11.
Write three differences between Personal Health and Community Health.
Q 12.
What is an antibiotic ? Give its one example.
Q 13.
(i) How do you define 'disease'? (ii) State and explain in brief the four major factors, which are the causes of disease.
Q 14.
What is '
germ theory of disease'? Who proposed it?
Q 15.
Give three examples of bacterial diseases.
Q 16.
Why taking an antibiotic is not effective in the common cold?
Q 17.
Name the vector that can cause sleeping sickness.
Q 18.
Name any two groups of microorganisms from which antibiotics could be extracted.
Q 19.
(i) What are the various ways to prevent the diseases ?
(ii) What is immunisation ?
Q 20.
What do you mean by active and passive immunisation ? [SAll – 2015]
Q 21.
What is a disease ? How many types of diseases have you studied ? Give examples.
Q 22.
Why are antibiotics not effective for viral disease ?
Q 23.
Give four examples of Chronic diseases.
Q 24.
Name the protozoan pathogen that causes kala-azar.
Q 25.
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 26.
What are antibodies?
Q 27.
Majority of children in many parts of India are already immune to Hepatitis A by the time they are five years old. Why ?
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.
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 30.
Becoming exposed to or infected with an infectious microbe (toes not necessarily mean developing noticeable disease. Explain.
Q 31.
Common cold spreads faster and is difficult to control. Give reason. [SAII -2014]
Q 32.
Is there any difference between 'being healthy' and 'disease free'?
Q 33.
List the diseases caused by worms?
Q 34.
How do antibiotics (say Penicillin) work on bacteria but not on human beings?
Q 35.
Give two examples of bacterial antibiotics.
Q 36.
(a) What are epidemic and endemic diseases? (b) Which organ is affected if a person is suffering from jaundice?
Q 37.
Why are kids and elderly people more vulnerable to cold/flu?
Q 38.
Why do people staying in air-conditioned homes/offices catch cold more often?
Q 39.
Write differences between 'Being Healthy' and 'Disease Free'.
Q 40.
Differentiate between allergy and autoimmune diseases.
Q 41.
Why are we advised to take blend and nourishing food when we are sick ?
Q 42.
What is the purpose of vaccination ?
Q 43.
Name any two diseases which are caused due to unprotected sexual intercourse.
Q 44.
Give two examples for each of the following :
(a) Acute diseases
(b) Chronic diseases
(c) Infectious diseases
(d) Non-infectious diseases.
Q 45.
What do signs and symptoms indicate if a person is suffering from any disease ? [SAII -2014]
Q 46.
Under which of the following conditions are you most likely to fall sick ?
(a) when you are taking examinations.
(b) when you have travelled by bus and train for two days.
(c) when your friend is suffering from measles. Why ?
Q 47.
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 48.
What is inflammation ? Write the symptoms of this in human body.
Q 49.
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 50.
Give any four factors necessary for a healthy person.
