RG Analysis of cell components

Subdecks (3)

What is magnification?
how much bigger the image is than the specimen
how is magnification calculated?
Using the formula :
magnification = image / actual
what is resolution?
how well a microscope distinguishes between 2 points that ae close together
2 main types of microscope?
optical and electron
another term for optical microscope?
light microscope
how do optical microscopes work?
they use light to form an image
maximum resolution of optical microscopes?
0.2 micrometres \
optical microscopes have a maximum resolution of 0.2 micrometres- this means that you cannot use an optical microscope to view organelles smaller than 0.2 um
what can you not see using an optical microscope?
ribosomes, ER , lysosomes
what is the maximum useful magnification of an optical microscope?
about x1500
how do electron microscopes work?
they use electrons to form an image
give one pro of electron microscopes?
higher resolution than optical microscopes so give a more detailed image = can be used to look at more organelles
maximum resolution of electron microscopes?
0.0002 micrometres
1000 times higher than optical microscopes
what is the maximum useful magnification of an electron microscope?
About x1,500,000