Pathogens II

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In today’s Physical Education Class class, we will be learning about Pathogens II

Pathogens II

pathogens ii

A pathogen is an organism that causes disease.

A body is naturally full of microbes. However, these microbes only cause a problem if your immune system is weakened or if they manage to enter a normally sterile part of the body.

Pathogens are different and can cause disease upon entering the body.

There are different types of pathogens, let’s consider some of them:

  • Viruses

Viruses are made up of a piece of genetic code, such as DNA or RNA, and protected by a coating of protein. Once the body is infected, viruses invade host cells within the body. They then use the components of the host cell to replicate, producing more viruses.

  • Bacteria

Bacteria are microorganisms made of a single cell. They are very diverse, have a variety of shapes and features, and have the ability to live in just about any environment, including in and on your body. Not all bacteria cause infections. Those that can are called pathogenic bacteria.

Antibiotics are used to treat bacterial infections. Some strains of bacteria have become resistant to antibiotics, making them difficult to treat. 

  • Fungi

There are millions of different fungal species on Earth. Just 300 or more are known to cause sickness. Fungi can be found just about everywhere in the environment, including indoors, outdoors, and on human skin. They cause infection when they overgrow.

Fungi cells contain a nucleus and other components protected by a membrane and a thick cell wall. Their structure can make them harder to kill.

  • Parasites

Parasites are organisms that behave like tiny animals, living in or on a host and feeding from or at the expense of the host. Though parasitic infections are more common in tropical and subtropical regions, they can occur anywhere.

In summary, Pathogens can cause a number of diseases that range in severity and how they’re transmitted.



What is a Pathogen?


Reading Assignment

What is the difference between a Pathogen and a Parasite?


Weekend Assignment

Mention three types of Pathogens.


We hope you enjoyed today’s class. In our next class, we will be talking about Meaning And Symptoms of Diseases.

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