How does the scanning electron microscope differ from the transmission electron microscope?

a. The SEM can view a live specimen.
b. The SEM can view the internal structure of a cell.
c. The SEM utilizes a beam of light that passes through the specimen.
d. The SEM gives a three dimensional image of the object being studied.
e. The SEM relies on the detection of electrons from the beam after contact with the specimens.


d

Biology & Microbiology

You might also like to view...

Which naturally-occurring plant hormone has a major role in the phototropic response of plants?  

A.  auxin B.  gibberellin C.  abscisic acid D.  ethylene E.  2, 4-D

Biology & Microbiology

The development of vaccinations began when Edward Jenner noticed that ________

a. people who had earlier exposure to cowpox did not develop smallpox b. people who drank water from a particular public water pump developed cholera c. bacteria removed from a sick animal would cause the same illness if injected into a healthy animal d. rats were always present when people contracted bubonic plague

Biology & Microbiology

The adrenal glands are closest to what organ(s)?

a. brain b. pancreas c. testes/ovaries d. thymus e. kidneys

Biology & Microbiology

When two amino acids combine via a dehydration reaction,

A. the R groups are lost. B. a peptide bond is formed. C. the amino group of each join together. D. water is added to begin the reaction. E. the carboxyl group of each join together.

Biology & Microbiology