Viewing Cells
Inquiry Question 1
Learning Intention - We will learn about:
- How technologies can be used
to determine the structure and
function of cells
M1.IQ1.P1.2
Success Criteria - I am able to
- Identify and distinguish a range
of technologies to to determine
the structure and function of
cells
Light/Compound Microscope
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●
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First type of microscope used to view cells
Use light and lenses to view cells
Magnification normally 10x - 1000x (can reach upto 2000x)
Advantages
● Cheap/portable (compared to other microscopes)
● Can view living organisms
● View true colour of organisms
(cells are normally stained a different colour)
Disadvantages
● Limited magnification
● Can’t view internal structures
Fluorescence Microscope
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●
Similar to light microscope but uses UV rays
Stains with dyes that cause some structures to ‘fluoresce’
Advantages
● Larger magnification than light microscope
● Can highlight individual structures
Disadvantages
● More expensive/less portable
● Colour is visible but is not ‘true’
Electron Microscope
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●
Use electrons to view gold plated objects
Magnification up to 10,000,000x
Advantages
● Huge magnification
● Can see detail inside cells
Disadvantages
● Very expensive, not portable
● Objects need to be gold plated and therefore
live organisms can’t be viewed
● Only black and white
Transmission Electron
Microscope (TEM)
Scanning Electron
Microscope (SEM)