3 – The Cell Flashcards
what did Anton van Leeuwenhoek do and when did he do this?
The 1660s and he invented the first microscope and saw living cells
Who are the five scientists the aided in the discovery of the cell?
Anton van Leeuwenhoek, Robert Hooke, Matthias Schleiden, Thomas Schwann, Rudolph Virehow
what did Robert Hooke do and when did he do it?
in 1665 and he examined court and named what he saw cells
what did Matthias Scleiden do and when did he do it?
in 1838 and he said all plants are made of cells
what did Thomas Schwann do and when did he do it?
in 1839 and he said all animals are made of cells
what did Rudolph Virehow do and when did he do it?
in 1855 and he said all cells come from other cells
what three things does the cell theory state?
that all organisms are composed of one or more cells, the cell is the basic unit of organization of organisms, and all cells come from pre-existing cells
Who are the two scientists that eight in the history of the microscope?
Leeuwenhoek and Hooke
what did Anton van Leeuwenhoeks microscope have?
A single lens, he described red blood cells, and bacteria from scrapings of teeth
what did Robert Hookes microscope have?
and had a set of three lenses and could actually see little detail
what microscope has two or more lenses, can look at living cells and 1500 X?
modern light microscope
what microscope has a beam of electrons are passed through magnetic field and specimens must be in a vacuum, only dead cells or specimens can be used?
electron microscope
what microscope has Judy images, used to study detail, 100,000 X +?
TEM or transmission electron microscope
what microscope has a 3-D image and 60,000 X?
SEM or scanning electron microscope
what microscope has an arrangement of Atoms on the surface of the molecule(DNA) and 1,000,000 X?
STM or scanning tunneling microscope
