biology A1 Flashcards
field of view
area that can be seen through the microscope
- decreases as magnification increases
FIT #
how many times an obbject fits across the diameter
7 functions of life:
- metabolism
- reproduction
- sensitivity
- homeostasis
- excretion
- nutrition
- growth
spontaneous generation
life forms from non-living matter
zacharias janssen
invented the 1st compound microscope
robert hook
named it the ‘cell’
francesco redi
jar experiment
proves that spontaneous generation is false
anton van leeuwenhoek
1st to see living cells in motion
names them animalcules
matthias schleiden
‘all living plants are made of cells”
developed part of the cell theory
theodore schwann
“all living animals are made of cells”
developed part of the cell theory
rudolph virchow
“where a cell exists, there must have been a pre-existing cell”
developed part of the cell theory
louis pasteur
swan necked flask and broth
pasteurisation
proved the theory of spontaneous generation
the light microscope
two or more lenses stacked on top of one another
uses visible light
the electron microscope
- TEM + SEM
- greater resolution
- greater magnification
transmission electron microscope
- goes through the specimen
- TEM
- cannot see living things
scanning electron microscope
- scans 3D surface
- SEM
- cannot see living things
confocal laser scanning microscope
used to study living specimens that are too thick ot be viewed using compound microscopes
scanning tunneling microscope
3D images of DNA
more magnifying than an electron microscope
