Question:
What are the different means by which infectious diseases are spread ?
Answer:
The different means by which infectious diseases spread are :
- By direct contact between a healthy and an infected person.
- By indirect contact between a healthy and an infected person.
- Through air.
- Through food.
- By vectors such as mosquitoes and insects etc.
- By the bite of a rabid animal.
Why Do We Fall Ill?
Q 1.
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 2.
Give examples of fungal diseases.
Q 3.
What is immunisation?
Q 4.
Give four examples of Chronic diseases.
Q 5.
What is the alternate name of brain fever? Which vector is responsible for this disease?
Q 6.
Why are antibiotics not effective for viral disease ?
Q 7.
What are acquired diseases?
Q 8.
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 9.
Are the answers to the above questions (Q2 and Q5) and necessarily the same or different? Why?
Q 10.
Name a disease which was earlier considered to be chronic but now can be treated in short duration?
Q 11.
State any two conditions essential for being free of disease.
Q 12.
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 13.
State any two conditions essential for being free of disease.
Q 15.
Give three examples of bacterial diseases.
Q 16.
List the diseases caused by worms?
Q 17.
How do Skin, Hairs, Saliva form the first line of defence against diseases?
Q 18.
Differentiate between allergy and autoimmune diseases.
Q 19.
What is an antibiotic ? Give two examples.
Q 20.
Define Health? What do you interpret when we say a person is in good health?
Q 21.
Differentiate between Acute Diseases and Chronic Diseases.
Q 22.
What are congenital diseases? Give two examples of such disease.
Q 23.
Name the diseases that can spread through housefly.
Q 24.
Why is AIDS considered to be a ‘Syndrome’ and not a disease ?
Q 25.
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 26.
What do you mean by immune response ? , [SAII – 2014]
Q 27.
Define antibiotic? Explain how it is able to control bacterial infections but not viral infections.
Q 28.
What are antibodies?
Q 29.
What do you mean by Phagocytosis?
Q 30.
Why Colostrum is good for infants?
Q 31.
Why are kids and elderly people more vulnerable to cold/flu?
Q 32.
What do you mean by active and passive immunisation ? [SAll – 2015]
Q 33.
What is a disease ? How many types of diseases have you studied ? Give examples.
Q 34.
Give the modes of transmission of each of the following diseases :
(i) Syphilis (ii) Tuberculosis (iii) Jaundice (iv) Japanese encephalitis [SAII -2012]
Q 35.
Why does intake of penicillin not affect human cells ? [SAll – 2014]
Q 36.
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 37.
What is a balanced diet?
Q 38.
Is there any difference between 'being healthy' and 'disease free'?
Q 39.
Explain why antibiotics are more effective in curing bacterial diseases than viral diseases.
Q 40.
Name the vector which causes malaria.
Q 41.
Write three differences between Personal Health and Community Health.
Q 42.
Write differences between 'Being Healthy' and 'Disease Free'.
Q 43.
Why are we advised to take blend and nourishing food when we are sick ?
Q 44.
Give four modes of transmission of AIDS.
Q 45.
What is an antibiotic ? Give its one example.
Q 46.
(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 47.
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 48.
Name the target organs for the following diseases :
(a) Hepatitis targets…………
(b) Fits or unconsciousness targets…………
(c) Pneumonia targets…………
(d) Fungal disease targets…………
Q 49.
Who discovered ‘vaccine’ for the first time ? Name two diseases which can be prevented by using vaccines.
Q 50.
“On exposure with an infectious microbe does not necessarily mean developing noticeable disease”. Do you agree ? Explain with reason. If yes, how severe infections occur in our body ?
