proved that dna is hereditary material

Disproved spontaneus generation

showed that genes code for enzymes

spliced animal DNA to bacterial DNA

used the first synthetic chemotherapeutic agent

Discovered penicillin

First to observe cells in plant material and name them

Observed that viruses are fitterable

discovered how DNA controls protein synthesis in a cell

Developed vaccine against smallpox

proved that microorganisms can cause disease

Proposed a classification system for streptococci based on antigens in their cell walls

discovered that DNA can be transferred from one bacterium to another

First to use disinfectants in surgical procedure

First to characterize a virus

First to observe bacteria

Said living arise from preexisting living cells

uses bacteria to produce acetone