The scanning electron microscope differs from the transmission electron microscope in that the
scanning electron microscope:a.
can view a live specimen.
b. relies on the detection of electrons from the beam after contact with the specimens.
c. can view the internal structure of a cell.
d. utilizes a beam of light that passes through the specimen.
e. gives a three dimensional image of the object being studied
E
You might also like to view...
When a usable organic electron donor is present, sulfate serves as a terminal electron acceptor during anaerobic respiration by ________.
A. Desulfonema B. Desulfovibrio C. Archaeoglobus D. All of the choices are correct.
Which of the following occurs subsequent to the
invasion of bacteria into a wound? a. complement activation b. capture of bacteria by lymph nodes c. binding of bacteria to B cells d. attraction of phagocytes by the chemotactic factors secreted by the bacteria e. all of these
Penicillin is toxic to certain dividing bacterial cells because it prevents cell wall formation, causing the
cells to burst. This indicates that the bacteria live in: a. a hypotonic medium. b. a hypertonic medium. c. an isotonic medium. d. a medium with a higher osmotic pressure than the cell. e. both a hypertonic medium and a medium with a higher osmotic pressure than the ce
In the axoneme, nexin
A) transports tubulin to the axoneme tip for assembly. B) generates force for outer doublets sliding past each other. C) projects inward from each doublet toward the central pair microtubules. D) links adjacent outer doublets to limit sliding. E) connects each outer doublet to the plasma membrane.