Like this study set? Create a free account to save it.

Sign up for an account

Already have a Quizlet account? .

Create an account

Francesco Redi

Disproved spontaneous generation by demonstrating that maggots developed without access to meat.

Louis Pasteur

Disproved spontaneous generation by using swan-shaped flask that prevented dust particles from contaminating broth.

Robert Hooke

provided the earliest record of microbes using his single lens microscope; author of "Micrographia"

Antonie Leeuwenhoek

Expanded on Hook's observations; Constructed hundreds of microscopes; Considered the "Father of Microbiology"

John Tyndall

Developed process of "Tyndallization" by use of a Tyndall Box coated with glycerin to catch any floating bacteria in the air; Used urine flasks to demonstrate the use of a Tyndall Box; Stated that some microbes have very high heat resistance

Ferdinand Cohn

Discovered heat resistant bacterial ENDOSPORES, which explained why boiling did not always eliminate all microorganisms.

Robert Koch

Linked microscopic organisms with disease by studying anthrax, which he infected mice with; Developed Koch's Postulates

Ignaz Semmellueis

Showed that women became infected in the maternity ward after examinations by physicians coming directly from the autopsy room.

Joseph Lister

Introduced aseptic techniques to keep the medical setting more sterile.

John Needham

Proposed to test whether or not microorganisms appeared spontaneously after boiling; boiled chicken broth, put it into a flask, sealed it, and waited...microorganisms grew; claimed victory for spontaneous generation

Lazzaro Spallanzani

Suggested that microorganisms were still able to enter the flask in Needham's experiment; modified Needham's experiment by placing chicken broth in a flask, sealed flask, drew off the air to create a vacuum, then boiled microorganisms grew!

Hooke, Leeuwenhoek

Who demonstrated that microbes exist?

Cohn, Pasteur, Tyndall

Who demonstrated that bacteria reproduces rather than spontaneously generates?

Robert Koch

Who demonstrated that microbes are responsible for diseases?

Please allow access to your computer’s microphone to use Voice Recording.

Having trouble? Click here for help.

We can’t access your microphone!

Click the icon above to update your browser permissions and try again


Reload the page to try again!


Press Cmd-0 to reset your zoom

Press Ctrl-0 to reset your zoom

It looks like your browser might be zoomed in or out. Your browser needs to be zoomed to a normal size to record audio.

Please upgrade Flash or install Chrome
to use Voice Recording.

For more help, see our troubleshooting page.

Your microphone is muted

For help fixing this issue, see this FAQ.

Star this term

You can study starred terms together

Voice Recording