Yousef
What is a cell?
Smallest
The basic structural and functional unit of all living organisms.
Largest
v
History of cell theory
History of cell theory
Observes cork and names the tiny chambers that he sees cells
History of cell theory
- Saw living organisms in pond water and milk
- Discovered single –celled animal – like organisms , now called protozoans.
History of cell theory
History of cell theory
History of cell theory
000
All these discoveries led to the development of :
The cell theory
The cell theory
1 All living organisms are composed of one or more cells.
2 Cells are the basics unit of structure and organization of all living organisms.
3 Cells arise only from previously existing cells. (Cells passing copies of their genetic material on to other daughter cells)
Cells contain membrane-bound organelles.
D
All living organisms are composed of cells.
C
Cells come only from preexisting cells.
B
The basic unit of life is the cell.
A
Which is NOT part of the cell theory?
4.
CORRECT
Quiz
End Of Lesson - TEST YOUR SELF
2
3
1
B
B
4
B
B
FIRST: History of the cell theory
The three images above show micrographs of yeast cells. Do you think the three images were seen through the same microscope?
No
Predict
Starter
There are two main types of microscopes. Each type of microscope has a different magnification and resolution.
Simple & compound
TEM & SEM
Classify microscopes
Body Tube
Nose Piece
Objective
Lenses
Stage
Clips
Diaphragm
Light Source
Ocular Lens
Arm
Stage
Coarse Adj.
Fine Adjustment
Base
Light Microscope Pg 6
Electron Micrscope Pg 6
Light microscope�( APPEAR AS SKETCHED IMAGES )
Transmission electron microscope ( appear like real section ) TEM
Electron microscope
Scanning electron microscope ( 3d ) SEM
Difference Between Compound Light & Electron Microscope
Compound Light Microscope | Electron Microscope |
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There are two main types of microscopes. Each type of microscope has a different magnification and resolution.
Simple & compound
TEM & SEM
Classify microscopes
Types of Electron microscopes
Differentiate
175×
D
17×
C
35×
B
25×
A
If a microscope has a series of three lenses that magnify individually 5x, 5x, and 7x, what is the total magnification of the microscope?
1.
CORRECT
Quiz
Calculate
TEM
D
optical
C
compound light
B
SEM
A
Which is a type of microscope that requires a specimen to be dead, thinly sliced, and stained with heavy metals?
2.
CORRECT
Quiz
Evaluate
Prokaryotic Cell
Cellular Structure and Function
11,000x
7.1 Cell Discovery and Theory
Chapter 7
Example : bacteria
No nucleus
Eukaryotic Cell
Cellular Structure and Function
400x
7.1 Cell Discovery and Theory
Chapter 7
Example : plant cell & animal cell
True nucleus
Differentiate between Prokaryote & Eukaryote
Analyze: What are common between plant cell & Animal cell?
Cytoplasm
Cell membrane
Mitochondria