SUMMARY: The chapter "Why Do We Fall Ill" explores the concept of health and disease, the causes of diseases, and how to prevent them. KEY TOPICS: health and its failure, disease and its causes, infectious and non-infectious diseases, pathogens, means of spread, principles of treatment, principles of prevention, vaccination, public health measures.
Which of the following is a non-infectious disease?
ATuberculosis
BDiabetes
CMalaria
DHIV/AIDS
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Correct answer: Option 2 — Diabetes
Q31 Mark
What is the role of vaccination in public health?
ATo treat existing diseases
BTo prevent the spread of infectious diseases
CTo enhance genetic diversity
DTo promote unhealthy habits
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Correct answer: Option 2 — To prevent the spread of infectious diseases
Q41 Mark
Which of the following is NOT a means of spread for infectious diseases?
AAirborne transmission
BDirect contact
CGenetic inheritance
DVector-borne transmission
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Correct answer: Option 3 — Genetic inheritance
Q51 Mark
What is the term for the failure of health?
AWellness
BIllness
CFitness
DRecovery
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Correct answer: Option 2 — Illness
Q61 Mark
Which of the following is a principle of treatment for infectious diseases?
AIsolation of patients
BRegular exercise
CBalanced diet
DAvoiding all contact with others
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Correct answer: Option 1 — Isolation of patients
Q71 Mark
What type of pathogen causes malaria?
ABacteria
BVirus
CProtozoa
DFungi
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Correct answer: Option 3 — Protozoa
Q81 Mark
Which of the following is a public health measure to prevent disease?
ARegular health check-ups
BIgnoring symptoms
CSelf-medication
DAvoiding vaccinations
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Correct answer: Option 1 — Regular health check-ups
Q91 Mark
What is the main characteristic of non-infectious diseases?
AThey are caused by pathogens
BThey can be spread from person to person
CThey are not caused by infectious agents
DThey are always hereditary
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Correct answer: Option 3 — They are not caused by infectious agents
Q101 Mark
Which of the following is a common vector for spreading diseases?
AWater
BAir
CMosquitoes
DSoil
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Correct answer: Option 3 — Mosquitoes
Q111 Mark
What is the best way to prevent the spread of infectious diseases?
AAvoiding contact with sick individuals
BEating healthy foods
CTaking vitamins
DDrinking herbal teas
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Correct answer: Option 1 — Avoiding contact with sick individuals
Q121 Mark
Which of the following diseases is caused by a virus?
ACholera
BInfluenza
CTyphoid
DTetanus
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Correct answer: Option 2 — Influenza
Q131 Mark
What is the term for a disease that can be transmitted from one person to another?
AChronic disease
BInfectious disease
CGenetic disease
DAutoimmune disease
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Correct answer: Option 2 — Infectious disease
Q141 Mark
Which of the following is an example of a preventive measure against diseases?
ASurgery
BAntibiotics
CVaccination
DChemotherapy
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Correct answer: Option 3 — Vaccination
Q151 Mark
What is the primary focus of public health measures?
AIndividual treatment
BCommunity health improvement
CResearch on diseases
DPharmaceutical development
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Correct answer: Option 2 — Community health improvement
Short Answer Questions10 questions
Q163 Marks
What is health according to the chapter, and how is it different from disease?
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Health is defined as a state of complete physical, mental, and social well-being, not merely the absence of disease. Disease, on the other hand, refers to a condition that impairs normal functioning and is often associated with specific symptoms.
Q173 Marks
List two examples of infectious diseases and two examples of non-infectious diseases.
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Examples of infectious diseases include tuberculosis and malaria. Non-infectious diseases include diabetes and asthma.
Q183 Marks
What are pathogens, and how do they contribute to the spread of diseases?
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Pathogens are microorganisms such as bacteria, viruses, fungi, and parasites that can cause diseases. They contribute to the spread of diseases by invading host organisms and multiplying, often leading to illness.
Q193 Marks
Explain the means of spread for infectious diseases.
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Infectious diseases can spread through various means such as direct contact with infected individuals, airborne transmission, contaminated water or food, and vectors like mosquitoes. Understanding these means helps in preventing outbreaks.
Q203 Marks
What are the principles of treatment for infectious diseases?
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The principles of treatment for infectious diseases include identifying the pathogen, using appropriate medications such as antibiotics or antivirals, and supporting the patient's immune system. Timely intervention is crucial for effective treatment.
Q213 Marks
How does vaccination help in the prevention of diseases?
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Vaccination helps in the prevention of diseases by stimulating the immune system to recognize and fight specific pathogens without causing the disease itself. This prepares the body to respond effectively if exposed to the actual pathogen in the future.
Q223 Marks
Describe the role of public health measures in controlling the spread of diseases.
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Public health measures play a crucial role in controlling the spread of diseases by implementing strategies such as vaccination programs, health education, sanitation, and surveillance. These measures help reduce transmission and protect community health.
Q233 Marks
What is the difference between acute and chronic diseases?
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Acute diseases are characterized by a sudden onset and typically short duration, such as the flu. Chronic diseases develop gradually and persist over a long period, often requiring ongoing management, like heart disease.
Q243 Marks
Identify two factors that can lead to the failure of health.
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Two factors that can lead to the failure of health are poor nutrition and lack of access to clean water. These factors can weaken the immune system and increase susceptibility to diseases.
Q253 Marks
Discuss how lifestyle choices can impact health and contribute to disease.
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Lifestyle choices such as diet, physical activity, smoking, and alcohol consumption significantly impact health. Poor choices can lead to non-infectious diseases like obesity and heart disease, while healthy choices can enhance overall well-being.
Long Answer Questions6 questions
Q266 Marks
Explain the difference between infectious and non-infectious diseases with suitable examples. How do their causes and modes of transmission differ?
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Infectious diseases are caused by pathogens such as bacteria, viruses, fungi, and parasites, and can be transmitted from one person to another through various means such as direct contact, air, water, or vectors. Examples include tuberculosis and influenza. Non-infectious diseases, on the other hand, are not caused by pathogens and cannot be spread from person to person. They often result from genetic factors, lifestyle choices, or environmental influences. Examples include diabetes and heart disease. The primary difference lies in the causative agents and the modes of transmission, where infectious diseases require a pathogen for spread, while non-infectious diseases do not.
Q276 Marks
Discuss the role of pathogens in causing diseases. What are the different types of pathogens, and how do they affect human health?
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Pathogens are microorganisms that cause diseases in humans and other living organisms. The main types of pathogens include bacteria, viruses, fungi, and parasites. Bacteria can reproduce rapidly and may produce toxins that harm host cells, while viruses invade host cells and replicate within them, often leading to cell death. Fungi can cause infections, particularly in immunocompromised individuals, and parasites can live on or in a host, causing various diseases. Understanding the nature of these pathogens is crucial for developing effective treatments and preventive measures against diseases they cause.
Q286 Marks
What are the principles of treatment for infectious diseases? Discuss the role of antibiotics and antiviral medications in this context.
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The principles of treatment for infectious diseases involve eliminating the causative pathogens, alleviating symptoms, and supporting the immune system. Antibiotics are effective against bacterial infections by either killing bacteria or inhibiting their growth, while antiviral medications target specific stages of viral replication to reduce the severity and duration of viral infections. It is essential to use these medications judiciously to prevent the development of resistance. Additionally, supportive care, such as hydration and rest, plays a vital role in recovery from infectious diseases.
Q296 Marks
Explain the concept of vaccination and its importance in public health. How do vaccines work to prevent diseases?
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Vaccination is a preventive measure that involves administering a vaccine to stimulate the immune system to recognize and fight specific pathogens. Vaccines contain weakened or inactivated parts of the pathogen, or pieces of its genetic material, which train the immune system to respond effectively upon exposure to the actual pathogen. This process helps to establish immunity without causing the disease itself. Vaccination is crucial in public health as it helps to reduce the incidence of infectious diseases, prevents outbreaks, and can lead to the eradication of diseases, thereby protecting vulnerable populations.
Q306 Marks
Describe the means of spread of infectious diseases. What measures can be taken to prevent their transmission?
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Infectious diseases can spread through various means, including direct contact with infected individuals, airborne transmission through respiratory droplets, contaminated surfaces, food, water, and vectors such as mosquitoes. Preventive measures include practicing good hygiene, such as regular handwashing, using masks, ensuring safe food and water supply, and controlling vector populations. Vaccination also plays a significant role in preventing the spread of infectious diseases by immunizing individuals and creating herd immunity within communities.
Q316 Marks
Discuss the impact of lifestyle choices on health and the development of non-infectious diseases. What preventive measures can be adopted?
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Lifestyle choices such as diet, physical activity, smoking, and alcohol consumption significantly impact health and can lead to the development of non-infectious diseases like obesity, diabetes, and cardiovascular diseases. Poor dietary habits and lack of exercise contribute to obesity, which is a risk factor for many chronic conditions. Preventive measures include adopting a balanced diet rich in fruits, vegetables, and whole grains, engaging in regular physical activity, avoiding tobacco, and limiting alcohol intake. Education and awareness about healthy lifestyle choices are essential for disease prevention.
Assertion–Reason Questions8 questions
Q321 Mark
Assertion (A): Health is defined as a state of complete physical, mental, and social well-being.
Reason (R): Health only refers to the absence of disease.
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Correct answer: Option 3 —
A is true, but R is false.
Q331 Mark
Assertion (A): Infectious diseases are caused by pathogens such as bacteria and viruses.
Reason (R): Non-infectious diseases are caused by lifestyle factors and genetic conditions.
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Correct answer: Option 1 —
Both A and R are true, and R is the correct explanation of A.
Q341 Mark
Assertion (A): Vaccination helps in preventing infectious diseases.
Reason (R): Vaccines work by introducing a harmless form of the pathogen to stimulate immunity.
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Correct answer: Option 1 —
Both A and R are true, and R is the correct explanation of A.
Q351 Mark
Assertion (A): Pathogens can spread through air, water, and direct contact.
Reason (R): Non-infectious diseases cannot be transmitted from one person to another.
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Correct answer: Option 1 —
Both A and R are true, and R is the correct explanation of A.
Q361 Mark
Assertion (A): Public health measures are essential to control the spread of diseases.
Reason (R): Public health measures are only necessary during outbreaks of infectious diseases.
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Correct answer: Option 4 —
A is false, but R is true.
Q371 Mark
Assertion (A): The principle of treatment focuses on curing the disease.
Reason (R): Prevention of disease is more important than treatment.
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Correct answer: Option 2 —
Both A and R are true, but R is not the correct explanation of A.
Q381 Mark
Assertion (A): Non-infectious diseases can be caused by environmental factors.
Reason (R): All diseases are caused by infectious agents.
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Correct answer: Option 4 —
A is false, but R is true.
Q391 Mark
Assertion (A): Hygiene practices can reduce the spread of infectious diseases.
Reason (R): Hygiene has no effect on the transmission of diseases.
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Correct answer: Option 3 —
A is true, but R is false.
Statement-Based Questions8 questions
Q401 Mark
Statement 1: Health is defined as a state of complete physical, mental, and social well-being.
Statement 2: Disease can be defined as a state of complete physical well-being.
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Correct answer: Option 2 —
Only Statement 1 is true.
Q411 Mark
Statement 1: Infectious diseases are caused by pathogens such as bacteria and viruses.
Statement 2: Non-infectious diseases are always hereditary in nature.
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Correct answer: Option 3 —
Only Statement 2 is true.
Q421 Mark
Statement 1: Vaccination helps in building immunity against specific infectious diseases.
Statement 2: Vaccination is effective only after the disease has occurred.
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Correct answer: Option 3 —
Only Statement 2 is true.
Q431 Mark
Statement 1: Pathogens can spread through air, water, and direct contact.
Statement 2: Only bacteria can act as pathogens.
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Correct answer: Option 4 —
Both statements are false.
Q441 Mark
Statement 1: Public health measures include sanitation and hygiene practices.
Statement 2: Public health measures are not necessary for controlling diseases.
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Correct answer: Option 2 —
Only Statement 1 is true.
Q451 Mark
Statement 1: The principles of treatment focus on curing the disease once it has occurred.
Statement 2: The principles of prevention aim to avoid the occurrence of diseases.
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Correct answer: Option 1 —
Both statements are true.
Q461 Mark
Statement 1: Non-infectious diseases cannot be transmitted from one person to another.
Statement 2: Infectious diseases can be prevented through vaccination.
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Correct answer: Option 1 —
Both statements are true.
Q471 Mark
Statement 1: Chronic diseases are typically long-lasting and require ongoing medical attention.
Statement 2: Acute diseases are always less severe than chronic diseases.
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Correct answer: Option 2 —
Only Statement 1 is true.
