Pathogen

High school (ages 12+)
Human Body

Name:

Date:

Step 1 · Read the article

Open the article and read it at the level above. Then answer the questions below in your own words.

https://smallwhale.org/articles/pathogen

1. What is the etymology?
2. What is the primary role?
3. What is a pathogen and how does it make us sick?
4. Why did scientists like Pasteur and Koch change the way we think about sickness?

Write what each word means, using the article.

Do not copy the article. Write two things you learned, the way you would explain them to a friend.

Answers below are taken from the article’s stored facts, so they match what the student read.

1. What is the etymology?Derived from Greek 'pathos' (suffering) and 'genēs' (producer), reflecting their disease-causing nature
2. What is the primary role?To initiate and propagate disease within a host organism
3. What is a pathogen and how does it make us sick?A pathogen is a tiny germ that can cause disease in a host. It can be a virus, bacteria, protozoa, fungi, or prions. They invade our bodies and sometimes produce toxins that damage our cells.
4. Why did scientists like Pasteur and Koch change the way we think about sickness?They proved that invisible germs, not bad air, cause many diseases. Their work started the germ theory and helped create vaccines and better sanitation.

Host: An organism that harbors a pathogen or parasite, often experiencing detrimental effects.
Epidemiology: The study of the distribution and determinants of health-related states or events in specified populations.
Co-evolution: The process where two or more species reciprocally affect each other's evolution, common between hosts and pathogens.