trure or false
a. elecron mirscopes can be used to view liveing and non – liveing things
b. the resolving power of TEM is greater than that of a LM
c.TEM’s and SEM’s are equally appropraite to use for viewing minute orgainsims
Microscope true or false questions please explain why?
trure or false
True,false,false
1 is false because an electron microscope only functions in a vacuum killing all things living and therefore only seeing a dead specimin.
2 not sure
3 not sure
a. elecron mirscopes can be used to view liveing and non – liveing things
Your teacher wants you to answer
False
In SEM, your specimen is dehydrated and sputter-coated with metal. It’s dead.
In TEM, your specimen is sliced thin, stained with heavy metal dye. Some experimentation has been done with wet mount preparation, but generally your specimen is going to be dead from the metal dye and then from the electron bombardment.
b. the resolving power of TEM is greater than that of a LM
True
The wavelength of the electron is less than the wavelengths of visible light, and thus you get better resolution.
c.TEM’s and SEM’s are equally appropraite to use for viewing minute orgainsims
False.
TEM is great for viewing something that’s sliced thinly. For viewing the surface of something, you’d want to use SEM. The pictures of insect heads are taken using SEM, for example.