Petri dish Petri dish A Petri dish (sometimes spelled "Petrie Dish" and alternatively known as a Petri plate or cell-culture dish), named after the German bacteriologist Julius Richard Petri, is a shallow cylindrical glass or plastic lidded dish that biologists use to culture cellssuch as bacteriaor small mosses. Modern Petri dishes usually feature rings and/or slots on their lids and bases so that when stacked, they are less prone to sliding off one another. Multiple dishes can also be incorporated into one plastic container to create a "multi-well plate". While glass Petri dishes may be reused after sterilization (via an autoclave at
The Behavior of Organisms respondent behavior is caused by an observable stimulus and operant behavior is where there is no observable stimulus for a behavior. The behavior is studied in depth with rats and the feeding responses they exhibit. The Behavior of Organisms The Behavior of Organisms is B.F. Skinner's first book and was published in May 1938 as a volume of the Century Psychology Series. It set out the parameters for the discipline that would come to be called the experimental analysis of behavior (EAB) and Behavior Analysis. This book was reviewed in 1939 by Ernest R. Hilgard. Skinner looks at science behavior