What are pathogens ?
What are pathogens ?
A wide range of organisms belonging to bacteria, viruses, fungi, protozoans, helminths, etc., could cause disease in man.
Such disease causing organisms are called pathogens.
$=$ Most parasites are therefore pathogens as they cause harm to the host by living in or on them. Pathogens can enter the body through various means, multiply and interfere with normal vital activities, which results in morphological and functional damage.
Pathogens must have the ability to adapt to life within the environment of the host.
For example, pathogens entering gut must know how to survive in stomach at low $\mathrm{pH}$ and resisting the various digestive enzymes.
Similar Questions
$MALT$ constitutes about _______ percent of the lymphoid tissue in human body.
$MALT$ constitutes about _______ percent of the lymphoid tissue in human body.
- [NEET 2017]
Differentiate the following and give examples of each:
$(a)$ Innate and acquired immunity
$(b)$ Active and passive immunity
Differentiate the following and give examples of each:
$(a)$ Innate and acquired immunity
$(b)$ Active and passive immunity
‘Pathogens' are
‘Pathogens' are
Given below are two statements :
Statement $I:$Autoimmune disorder is a condition where body defense mechanism recognizes its own cells as foreign bodies.
Statement $II:$Rheumatoid arthritis is a condition where body does not attack self cells.
In the light of the above statements, choose the most appropriate answer from the options given below:
Given below are two statements :
Statement $I:$Autoimmune disorder is a condition where body defense mechanism recognizes its own cells as foreign bodies.
Statement $II:$Rheumatoid arthritis is a condition where body does not attack self cells.
In the light of the above statements, choose the most appropriate answer from the options given below:
- [NEET 2022]
An 'antigen' is
An 'antigen' is