You are here
Meaning of Disease
- Disease means "without ease" or discomfort
- It disturbs normal body functioning
- Certain signs and symptoms appear
- Vital functions get modified
- It is a deviation from the normal state
- body cannot work normally
- fever and weakness appear
- this is a disease state
- environmental factors like malnutrition
- infective agents like bacteria
- inherent defects like genetic anomalies
- Disease may be a response to environment, infective agents, inherent defects, or a mix.
- Industrial hazards and climate are examples of environmental factors.
- A combination of these factors can also cause disease.
Pathogens
- Some microorganisms cause disease
- These are called pathogens
- They can be bacteria or viruses
- Also protozoa and fungi
- They harm humans, animals and plants
- cause TB and tetanus
- also cholera and typhoid
- spread disease in the body
- communicable diseases spread to others
- non-communicable diseases do not spread
- both can be caused by microbes
- Pathogens include bacteria, viruses, protozoa and fungi.
- Some microorganisms also spoil food, clothing and leather.
- Diseases by microbes split into communicable and non-communicable.
Name the following: Microorganisms which cause diseases in animals and plants.
Show answer
Explanation
- Pathogens are disease-causing microorganisms.
- They include bacteria, viruses, protozoa and fungi.
Name the following: The state of complete well-being and not merely the absence of a disease.
Show answer
Explanation
- Health covers physical, mental and social well-being.
Name the following: The full form of WHO.
Show answer
Explanation
- WHO gives the global definition of health.
Name the following: A disease caused due to metabolic order.
Show answer
Explanation
- Diabetes is a metabolic disorder.
- Blood sugar rises due to insufficient insulin.
What do you understand by disease? Name some pathogens which cause disease.
Show answer
Explanation
- Disease shows certain signs and symptoms or malfunction of vital functions.
- Pathogens are disease-causing microorganisms.
- Examples are bacteria, viruses, protozoa and fungi.
Name any two diseases caused by the following microorganisms: Fungi, protozoa, virus, bacteria.
Show answer
Explanation
- Fungi: Ringworm, Athlete's foot.
- Protozoa: Malaria, Dysentery.
- Virus: Common cold, Chickenpox.
- Bacteria: Tuberculosis, Typhoid.
Which of the following disease is not caused by bacteria?
- (a) cholera
- (b) typhoid
- (c) tuberculosis
- (d) measles
Show answer
Explanation
- Measles is caused by a virus.
- Cholera, typhoid and tuberculosis are bacterial.
