size of microbes
less than 1mm
size of microbes
what were kochs postulations
- microorganism must be presetn in all cases
- isolated and grown in pure culture
- disease reproduced in new host
- recovered and regrown
what did koch show with anthrax?
from cow -> pure culture -> disease -> pure culture
what did koch grow his pure culture on?
potato= not all could grow
gelatin and water = not solid at 37 degrees
AGAR!
what did anton van leewenhoek do?
powerful magnifier
animacules
what did lazzaro spallanzani do
boiled broth killed microbes sealed no growth broke growth proposed no spontaneous generation
what did louis pasteur do
boiled broth in a swan neck flask
boil - no growth
boil -> break = growth
what were kochs postulations
- microorganism must be presetn in all cases
- isolated and grown in pure culture
- disease reproduced in new host
- recovered and regrown
what did koch show with anthrax?
from cow -> pure culture -> disease -> pure culture
what did koch grow his pure culture on?
potato= not all could grow
gelatin and water = not solid at 37 degrees
AGAR!
what did anton van leewenhoek do?
powerful magnifier
animacules
what did lazzaro spallanzani do
boiled broth killed microbes sealed no growth broke growth proposed no spontaneous generation
what did louis pasteur do
boiled broth in a swan neck flask
boil - no growth
boil -> break = growth
