chapter 4: cell theory and cell study the origins of understanding the cell
TRANSCRIPT
Chapter 4: Cell Theory and Chapter 4: Cell Theory and Cell StudyCell Study
The origins of understanding the The origins of understanding the cellcell
a. a. All organisms are _______________________________All organisms are _______________________________..
Organisms can be either ____________, ___________, or Organisms can be either ____________, ___________, or
__________________________________
b. b. The cell is the _________________________________ of The cell is the _________________________________ of organisms.organisms.
_________________ happens within a cell _________________ happens within a cell
all cells carry on similar __________________________all cells carry on similar __________________________
c. c. Cells come from ___________________________Cells come from ___________________________..
Belief that life started as ___________________Belief that life started as ___________________
Cells ____________ over millions of years to become all theCells ____________ over millions of years to become all the
different forms of ______________.different forms of ______________.
A. The Cell TheoryA. The Cell Theory
1. __________________ 1. __________________
Scientists debate whether to consider them ___________ Scientists debate whether to consider them ___________
Viruses are __________ made of ___________ Viruses are __________ made of ___________
but they can ____________ and carry out _____________but they can ____________ and carry out _____________
inside a host cellinside a host cell
2. Where did the 1st cells come from?2. Where did the 1st cells come from? Theory of _______________________Theory of _______________________
B. Exceptions to the cell theoryB. Exceptions to the cell theory
________________________ – 1953 Prove Spontaneous Generation Simulated ______________ to find that _________________________ could be spontaneously formed from ___________________________
- Discovery of the ________________ allows scientists to first view cells. Before the discovery of cells people believe diseases caused by ___________________.
C. History of the Cell TheoryC. History of the Cell Theory
Cell Size and Scale
1. ____________________
English scientist in 1665
looked at ________ under the microscope
what he saw he called ___________
he really saw the ___________________.
2. __________________________ Dutch Scientist in 1674 discovered _________________ in
pond water also looked at ____________, sperm,
and other human cells but did nothing with it through high power simple microscopes.
3. ________________
English scientist in 1833
discovers and names the _____________
4. ___________________
German scientist in 1838
“all ______________ were composed of cells.”
5. ___________________ German scientist in 1839 “all ______________ were composed of cells.” Schleiden and Schwann are credited with publishing the _____________
6. __________________
French scientist 1824 – 1830
“the cell is the ____________
__________________________”
discovers the process of _________
7. _____________________
German scientist in 1858
“cells come from _______________”
D. EquipmentD. Equipment1. Parts of the Compound Light Microscope a. ____________ b. ___________________ c. ________________ d. __________________ e. __________________ f. Mirror / Illuminator, Body, Stage, Base
2. __________________ _____________________________________________
3. _______________ Resolution is the ability to ______________ between 2 different items
4. Measuring with the Microscope
a. __________ measure a cell with a __________ – not accurateb. Use units called __________ (um) 1 mm = 1000um
Measure field of viewField of view = 1.1mm1.1 mm =
1mm
1100um
1100um
How big is this one cell?
How many cells fit across?
Roughly – 10 You have to estimate the best you can
Divide the distance by your estimation of cells
1100um / 10cells = 110um / cell
5. Other Types of Microscopes a. ____________ - 1 lens = magnifying lens b. _____________ - use both eyes, 3D image, used for micro-dissections c. _____________________ – extremely high magnification (100,000,000x) and resolution
6. ________________ Centrifuges separate materials based on density by spinning very rapidly
7. __________________ Tissue culture is the growth of cells in the lab