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In 1665 blank blank saw tiny pores in cork with his primitive microscope and called them blank
Robert Hooke cells
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In 1824, the french army doctor blank blank found that plant tissues were composed of individual blanks
J.R.H Dutrochet cells
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a few years later, in 1833 Robert Brown discovered the tiny structure within cells called the blank
nucleus
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in 1839, the botanist blank and the zoologist blank proposed the cell law
schleiden schwann
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stare the cell law
all living things are composed of cells
-
why is it called a law
it was an observation for which no exceptions were found
-
in 1859, Rudolf Virchow demonstrated that
new cells were always derived from existing cells of the same organism
-
cells that have a nuclear membrane are called blank
eukaryotes
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cells that do not have a nuclear membrane are called blank
prokaryotes
-
blank are an example of cells in question nine
bacteria
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Eukaryote cells have blank, but prokaryote cells do not
organelles
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you are an blank, which refers to one distinct, living being
organism
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most multicellular organisms are composed of blank systems
Organ
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Each of these objects are made up of many blank, which are made up of similar cells
tissues
-
A blank is 10-3 meter
millimeter
-
A blank is 10-6 meter
Micrometer
-
A blank is 10-9 meter
nanometer
-
The study of organs is called blank
anatomy
-
The study of tissues is called blank
histelogy
-
The study of cells is called blank and blank
cytology microbiology
-
The limit of resolution of a light microscope is about blank
0.17 UM
-
what is meant by the limit of resolution
this means that if two dots were 0.17 UM apart, they could be seen as two dots, but if they were any closer, they would be seen as one dot
-
A confocal microscope uses blank blank, instead of visible light to obtain a greater limit of resolution, than a compound microscope
laser beams
-
The limit of resolution of a TEM is about
0.4 NM
-
The scanning electron microscope focuses on the blank of a specimen
Surface
-
with the transmission electrons microscope, the electron beam passes blank a specimen
Through
-
what is the advantage of using a SEM instead of a TEM
The SEM produces a highly magnified image of an actual specimen without greatly changing it
-
cells can be broken apart by blank blank
cell fractionation
-
The parts of a cell can be separated by blank, which spins the solutions, so that the cell parts are pulled to the bottom of the test tube
ultracentrifuge
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