Petri dish

High school (ages 12+)
Science & Technology

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/petri-dish

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 inventor?Julius Richard Petri
2. What is the year of design refinement?1887
3. Who invented the Petri dish?The dish was first made by Julius Richard Petri in 1887, after his friend Robert Koch had started growing microbes in 1881. Petri changed the design so it was easier to keep the cultures pure.
4. Why does a Petri dish have a lid?The lid stops airborne germs from getting into the dish, keeping the tiny cells safe and pure. It also lets the cells breathe so they can grow.

Aseptic Technique: Methods used in laboratories to prevent contamination by unwanted microorganisms.
Inoculum: A small sample of microorganisms or cells introduced into a culture medium.
Microbiology: The scientific study of microscopic organisms, including bacteria, viruses, and fungi.