Why Do We Fall Ill - Class 9 Biology - Extra Questions

What precautions will you take to justify prevention is better than cure ?



What are the principles of treatment of infectious diseases?



Germ or germ derived substance introduced into the body to prevent the occurrence of an infectious disease.



Write a short notes on  generic medicines.



Give an example of a disease that can spread through a bite of an animal.



It is difficult to make antiviral medicines than antibiotic? Why? Give reason for the same?



Prevention of a disease is more desirable than its treatment'. Justify this statement.



Write the micro organisans causing the following diseases
i) Kala azar
ii) sleeping sickness
iii) Acne



Give two example of each of the following :

Disease which spread through air 



Give an example of each of the following :

Diseases which spread through water 



What are the different ways used for prevention of diseases?



What determines the severity of disease manifestation?



What are the basic principles of preventing an infectious disease?



The disease-causing microbes enter the body through different means. Do all microbes go to the same tissue or organ, or do they go to different ones?



Which bacterium causes peptic ulcers ? Who discovered the peptic ulcer pathogen for the first time?



Name the target organ for the following disease:
Fits or unconsciousness targets________.



What can be achieved/can be prevented?

Drinking boiled and filtered water.



Explain any three preventive measures to control microbial infections.



The immune system of a person is suppressed. It is a sexually transmitted disease and is caused by a virus.
(a) Name the disease the patient is suffering from.
(b) What is the causative organism?



Explain the following statement by giving one example, ”It is not necessary that the pathogen may affect an organ or tissue depending upon the point of entry”.



Long Answer questions.
Justify the following statements:
a. Availability of proper and sufficient food would prevent infectious diseases.
b. The general ways of preventing infection mostly relate to preventing exposure.



What is an antibiotic? Give two examples.



What do you mean by vaccination? Who first conceived the idea of vaccination ?



Which bacterium does cause peptic ulcers? Who discovered the pathogen of peptic ulcers for the first time?



What is the reason that dehydrated patients are given intravenous solution of pure water with a small amount of dissolved salt rather than just pure water?



It is commonly believed that a bad cold takes seven days to subside automaticalIy. Even after taking medicine, it takes seven days to cure. Why?



Collect information about generic medicines and discuss them in the class.



Define the therapeutics with one example.



Class 9 Biology Extra Questions