EMAM #2 Flashcards
Anton van Leeuwenhoek
First to observe microorganisms
Robert Hooke
first to observe “small chambers” in cork and called them cells
Mathias Shchleiden
discovered that animals are made of cells
Cell theory
All life is made of cells
A cell is a basic unit of life
All cells come from cells
Compound light microscope
common lab microscope, 3000x, light, 2D, sees living cells
stereomicroscope
dissecting microscope, 500x, light, 3D, magnifies surfaces of living things
SEM
scanning EM, 100,000x, electrons, 2D, interior of cells, kills!
TEM
transmission EM, 300,000x, electrons, 2D, interior of cells, kills!
eukaryote
larger and more complex, have many types of organelles,
2 types: animals and plants
prokaryote
smaller and simpler, no nucleus, or organelles, bacteria.
limit of resolution
the point at which the ability to distinguish between objects blurs/is lost. (problem with light micoscopes)
microtome
a tool used to slice materials thin for use with microscopes
centrifuge
a tool used separate material by spinning them
cell culturing
growing cells outside of the body in a Petri dish
homeostasis
ability to maintain constant internal conditions (like blood pH, body temperature)