CBSE Class 9 Science Why Do We Fall Ill Notes Set A

Download CBSE Class 9 Science Why Do We Fall Ill Notes Set A in PDF format. All Revision notes for Class 9 Science have been designed as per the latest syllabus and updated chapters given in your textbook for Science in Standard 9. Our teachers have designed these concept notes for the benefit of Grade 9 students. You should use these chapter wise notes for revision on daily basis. These study notes can also be used for learning each chapter and its important and difficult topics or revision just before your exams to help you get better scores in upcoming examinations, You can also use Printable notes for Class 9 Science for faster revision of difficult topics and get higher rank. After reading these notes also refer to MCQ questions for Class 9 Science given our website

CBSE Class 9 Why do we fall ill. Learning the important concepts is very important for every student to get better marks in examinations. The concepts should be clear which will help in faster learning. The attached concepts made as per NCERT and CBSE pattern will help the student to understand the chapter and score better marks in the examinations.

Chapter-13

Why do we fall ill

1.”Health” is a state of being well enough to function well physically, mentally, and socially.

2.”Disease”( disturbed ease) means being uncomfortable. One or more systems of the body will change, give rise to “Symptoms” ( Cough, loose motions, pus formation, headache, fever, breathlessness, vomiting, fits, unconsciousness, inflammation , swelling and general effects - a Doctor look for the basis of symptoms). Diseases are basically two types- Acute Disease & Chronic Disease

3. Acute Disease: The disease which lasts for only a short period of time is called Acute Disease Ex. Common Cold.

4.Chronic Disease: The disease which lasts for long period of time is called Chronic Disease Ex. Tuberculosis.

 class_9_science_concept_2

5. Causes of Diseases : Most of the diseases have many causes, rather than one single cause, like unclean water, nourishment, genetic differences, genetic abnormalities e.g. Based on the causes diseases are of two types: Non-Infectious Diseases and Infectious Diseases.

class_9_science_concept_2a

class_9_science_concept_2b

9. Principles of Treatment:

1. Antibiotics- many bacteria make a cell wall to protect themselves, the antibiotic (Penicillin) blocks the bacterial process that builds cell wall and blocks the biochemical pathways. Antibiotics do not work against viral infection Antiviral medicine is harder than making Antibacterial medicine because Virus has only few biochemical mechanisms of their own. Other medicines bring down fever, reduce pain or loose motions. We can take bed rest to conserve energy.

10. Principles of Prevention : Following three limitation are normally confronted while treating an infectious disease:

• Once someone has disease, their body functions are damaged and may never recover completely.

• Treatment will take time, which means that someone suffering from a disease is likely to be bedridden for some time even if we can give proper treatment.

• The person suffering from an infectious disease can serve as the source from where the infection may spread to other people.

General ways of preventing infectious disease :

• Air-borne – We can prevent exposure by providing living condition that are not overcrowded.

• Water-borne – prevent by providing safe drinking water. This is done by treating the water to kill any microbial contamination.

• Vector-borne – We can provide clean environment, which would not allow mosquito breeding.

11. Immunity: Even in cells there is repair mechanism called” Immunity”. Immune cells manage to kill off the infectious agent Smallpox disease is eliminated by developing memory cells for particular infection by mimics the microbes, called” Vaccine”. The basis of Immunization- if you had smallpox once, there was no chance of suffering from it again. Proper nutrition is essential to maintain body immunity. There are vaccines against tetanus, diphtheria, whooping cough, measles, polio and many other diseases.

12. Prevention of disease is better than cure. Hygiene is the basic key to maintain good health.

QUESTION BANK:

1. Define Health……. (It is astate of being well enough to function well physically, mentally, and socially)

2. Name any two Symptoms of diseases………………………. (Cough& loose motions)

3. The disease which last for only a short period of time is called……………….( Acute Disease)

4. State whether Tuberculosis is aChronic Disease or Acute Disease…… (Chronic Disease)

5. Mention the causal organism for Sleeping sickness ………… (Trypanosoma)

6. Cholera is a waterborne disease, mention TRUE/ FALSE ……….. (TRUE)

7. Antibiotics do not work against viral infections, mention TRUE/ FALSE ……….. (TRUE)

8. Write short notes on Immunity

(Even in cells there is repair mechanism called” Immunity”Immune cells manage to kill off the infectious agents.)

9. Explain with an example the term Vaccine. ( Smallpox disease is eliminated by developing memory cells for particular infection by mimics the microbes, called” Vaccine”).

10. State reasons to support “Prevention of disease is better than cure”.

QUESTION PAPER:FORMATIVE ASSESSMENT – I (For Practice)

Q.1 Define Health

Q.2 Mention any two symptoms of diseases.

Q.3 Typhoid is a bacterial disease. Mention True/ False…………….

Q.4 Sleeping sickness is caused by……………………………………………

Q.5 Elephantiasis is caused by…………………………………………………….

Q.6. Mention two Air born diseases1…………………………..2………………….

Q.7 Mention two Sexually Transmitted Diseaes1………………..2……………….

Q.8 Mention two Viral Diseaes1………………..2……………….

Q.9 What is called vector. Give one example.

Q.10 Give two examples of Chronic diseases.

Q.11 Distinguish between Infectious and Non-infectious diseases.

Q.12 Write a short notes on Small Pox.

Q.13 What is immunity? Write short notes on it.

Q.14 What is Vaccination? Give the details, how it works in human body.

Q.15 Write three reasons for Cancers.

Q.16 What are the basic five principles of treatment for diseases.

Q.17 How Hygiene could help you to maintain good health and mention five situations to take care about health.

 

Please click the link below to download pdf file for CBSE Class 9 Why do we fall ill.

Tags: 

 


Click to View or Download pdf file
Click for more Science Study Material
CBSE Class 9 Science Atoms And Molecules Notes Set A
CBSE Class 9 Science Atoms And Molecules Notes Set B
CBSE Class 9 Science Categories Of Practical Skills Notes
CBSE Class 9 Science Diversity In Living Organisms Notes Set A
CBSE Class 9 Science Diversity In Living Organisms Notes Set B
CBSE Class 9 Science Force And Laws Of Motion Notes Set A
CBSE Class 9 Science Force And Laws Of Motion Notes Set B
CBSE Class 9 Science Fundamental Unit Of Life Notes
CBSE Class 9 Science Gravitation And Fluid Notes Set A
CBSE Class 9 Science Gravitation And Fluid Notes Set B
CBSE Class 9 Science Gravitation And Fluid Notes Set C
CBSE Class 9 Science Improvement In Food Resources Notes Set A
CBSE Class 9 Science Improvement In Food Resources Notes Set B
CBSE Class 9 Science Is Matter Around Us Pure Notes Set A
CBSE Class 9 Science Is Matter Around Us Pure Notes Set B
CBSE Class 9 Science List Of Experiments
CBSE Class 9 Science Matter In Our Surroundings Notes Set A
CBSE Class 9 Science Matter In Our Surroundings Notes Set B
CBSE Class 9 Science Motion Notes
CBSE Class 9 Science Motion Notes Set A
CBSE Class 9 Science Natural Resources Notes Set A
CBSE Class 9 Science Natural Resources Notes Set B
CBSE Class 9 Science Physical Science Notes
CBSE Class 9 Science Revision Notes
CBSE Class 9 Science Sound Notes
CBSE Class 9 Science Structure Of Atom Notes Set A
CBSE Class 9 Science Structure Of Atom Notes Set B
CBSE Class 9 Science The Fundamental Unit Of Life Notes
CBSE Class 9 Science Tissue Notes Set A
CBSE Class 9 Science Tissue Notes Set B
CBSE Class 9 Science Wave Motion And Sound Notes
CBSE Class 9 Science Why Do We Fall Ill Notes Set A
CBSE Class 9 Science Why Do We Fall Ill Notes Set B
CBSE Class 9 Science Work Energy And Power Notes Set A
CBSE Class 9 Science Work Energy And Power Notes Set B

Latest NCERT & CBSE News

Read the latest news and announcements from NCERT and CBSE below. Important updates relating to your studies which will help you to keep yourself updated with latest happenings in school level education. Keep yourself updated with all latest news and also read articles from teachers which will help you to improve your studies, increase motivation level and promote faster learning

CBSE asks schools to load Class 12 Internal Assessment Marks

This has a reference to the letter no CBSE/COORD/2021 dated 11.02.2021 regarding conduct of the School-Based Assessment (Internal Assessment/Practical/ Project) of Class-XII and uploading the marks by 11.06.2021. It has been observed that some schools have not been...

FAQs on Policy for Tabulation of Marks for Class 10 Board Exams

ON POLICY Question.1 How CBSE will declare the result of Class-X? Answer. Results of Class X Board will be declared on the basis of an objective criterion developed by the Board vide Notification no.CBSE/CE/2021 dated 01.05.2021. Question.2. If any candidate is not...

Moderation of Marks Class 11 and 12 Board Exams

The portal for moderation and finalization of results for Class-12 is being opened from 16.07.2021 to 22.07.2021. As Board has to declare the result latest by 31.07.2021, schools have been requested to follow the schedule strictly and complete the moderation within...

CBSE Board Examination Scheme of Assessment 2021 2022

A. Academic session to be divided into 2 Terms with approximately 50% syllabus in each term: The syllabus for the Academic session 2021-22 will be divided into 2 terms by following a systematic approach by looking into the interconnectivity of concepts and topics by...

CBSE Class 12 Evaluation Criteria 2021

SUMMARY OF THE POLICY FOR TABULATION OF MARKS FOR CLASS XII BOARD EXAMINATIONS 2021   1(a) Due to cancellation of the Board examinations, the assessment of theory portion of 80/70/60/50/30 marks will be done by the school based on the following:     Class...

×
Studies Today