| Infectious Diseases | Non-Infectious Diseases |
|---|---|
| 1. Caused by external factors e.g. pathogens | 1. Caused by internal factors e.g. genetic abnormality |
| 2. Diseases can spread unhealthy person to healthy person. | 2. Diseases do not spread from infected to a healthy person. |
| 3. Infection can spread and infect others via direct contact or medium (air, water, vectors etc.) | 3.Infection does not spread through direct contact nor by the medium. However, it may be hereditary i.e. from parents to offspring. |
| 4. Examples: Malaria, Dengue etc. | 4. Examples: Goitre, High Blood pressure, Diabetes |
Give two examples for each of the following :
(a) Acute diseases
(b) Chronic diseases
(c) Infectious diseases
(d) Non-infectious diseases.
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 ?
Differentiate between communicable and non-communicable diseases. Give one example of each.
List any four essential factors that must be taken icare of by an individual for keeping good health.
Which amongst the two diseases : acute or chronic has adverse effect on the health of a person? Explain giving a suitable example.
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 ?
Majority of children in many parts of India are already immune to Hepatitis A by the time they are five years old. Why ?
Classify infectious agents into different categories and also mention the diseases caused by them.
Becoming exposed to or infected with an infectious microbe (toes not necessarily mean developing noticeable disease. Explain.
(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]
Why do some children fall ill more frequently than others living in the same locality ?
(i) Which bacterium causes peptic ulcers ?
(ii) Who discovered the above pathogen for the first time ?
What do signs and symptoms indicate if a person is suffering from any disease ? [SAII -2014]
(i) What is an epidemic disease ?
(ii) Which organ is affected if a person is suffering from jaundice ?
You have suffered from chickenpox, when you were in class three. Why will you not suffer from it again ? [SAII -2014]
Name the target organs for the following diseases :
(a) Hepatitis targets…………
(b) Fits or unconsciousness targets…………
(c) Pneumonia targets…………
(d) Fungal disease targets…………
Who discovered ‘vaccine’ for the first time ? Name two diseases which can be prevented by using vaccines.