Question:
What is 'germ theory of disease'? Who proposed it?
Answer:
Louis Pasteur proposed 'germ theory of disease. Accord to this theory he stated that micro-organisms are the causes of many diseases. It is also called the pathogenic theory of medicine.
Why Do We Fall Ill?
Q 1.
Name the diseases that can spread through housefly.
Q 2.
(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 3.
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 4.
Why are antibiotics not effective for viral disease ?
Q 6.
Name the target organs for the following diseases :
(a) Hepatitis targets…………
(b) Fits or unconsciousness targets…………
(c) Pneumonia targets…………
(d) Fungal disease targets…………
Q 7.
Are the answers to the above questions (Q2 and Q5) and necessarily the same or different? Why?
Q 8.
Name the pathogen causes peptic ulcer.
Q 9.
What are the different means by which infectious diseases are spread?
Q 10.
Name the vector that can cause sleeping sickness.
Q 11.
What are the basic principles involved in medical treatment for diseases?
Q 12.
Why are kids and elderly people more vulnerable to cold/flu?
Q 13.
What do you mean by immune response ? , [SAII – 2014]
Q 14.
Common cold spreads faster and is difficult to control. Give reason. [SAII -2014]
Q 15.
Define antibiotic? Explain how it is able to control bacterial infections but not viral infections.
Q 16.
Differentiate between allergy and autoimmune diseases.
Q 17.
Give two examples for each of the following :
(a) Acute diseases
(b) Chronic diseases
(c) Infectious diseases
(d) Non-infectious diseases.
Q 18.
What is inflammation ? Write the symptoms of this in human body.
Q 19.
You have suffered from chickenpox, when you were in class three. Why will you not suffer from it again ? [SAII -2014]
Q 20.
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 21.
What are acquired diseases?
Q 22.
How do antibiotics (say Penicillin) work on bacteria but not on human beings?
Q 23.
Why taking an antibiotic is not effective in the common cold?
Q 24.
(a) What are epidemic and endemic diseases? (b) Which organ is affected if a person is suffering from jaundice?
Q 25.
Write three differences between Personal Health and Community Health.
Q 26.
Why are we advised to take blend and nourishing food when we are sick ?
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.
Which amongst the two diseases : acute or chronic has adverse effect on the health of a person? Explain giving a suitable example.
Q 29.
What do you mean by active and passive immunisation ? [SAll – 2015]
Q 30.
Who discovered ‘vaccine’ for the first time ? Name two diseases which can be prevented by using vaccines.
Q 31.
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 32.
What is a disease ? How many types of diseases have you studied ? Give examples.
Q 33.
What do you mean by disease symptoms ? Explain giving two examples.
Q 34.
What precautions will you take to justify “prevention is better than cure” ?
Q 35.
Becoming exposed to or infected with an infectious microbe (toes not necessarily mean developing noticeable disease. Explain.
Q 36.
What are infectious agents? What are the different infectious agents?
Q 37.
What are antibodies?
Q 38.
What do you mean by Phagocytosis?
Q 39.
Why Colostrum is good for infants?
Q 40.
What is an antibiotic ? Give its one example.
Q 41.
How many times did you fall ill in the last one year ? What were the illnesses ? (a) Think of one change you could make in your habits in order to avoid any/most of the above illnesses.
(b) Think of one change you would wish for in your surroundings in order to avoid any/most of the above illnesses.
Q 42.
Why do some children fall ill more frequently than others living in the same locality ?
Q 43.
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 44.
How do we identify a disease?
Q 45.
List the diseases caused by worms?
Q 46.
Name the protozoan pathogen that causes kala-azar.
Q 47.
Explain why antibiotics are more effective in curing bacterial diseases than viral diseases.
Q 48.
Give two examples of bacterial antibiotics.
Q 49.
Give an example of fungal antibiotic.
Q 50.
Name the vector which causes malaria.
