A high-powered microscope that produces an image from scattered secondary electrons is the
a. immunofluorescence microscope
b. bright-field light microscope.
c. transmission electron microscope (TEM)
d. scanning electron microscope (SEM).
e. confocal microscope.
The correct answer is d. scanning electron microscope (SEM).
To arrive at this answer, let's first understand the purpose of each microscope option:
a. immunofluorescence microscope: This type of microscope uses fluorescent dyes to label specific molecules in a sample, allowing for visualization under specific wavelengths of light.
b. bright-field light microscope: This is the traditional microscope that uses visible light to illuminate a sample, producing a bright image against a dark background.
c. transmission electron microscope (TEM): This microscope uses a beam of electrons to pass through a thin sample, creating an image with high magnification and resolution.
d. scanning electron microscope (SEM): With an SEM, a beam of electrons scans the surface of a sample, and by detecting the scattered secondary electrons, it produces a detailed 3D image of the sample's surface.
e. confocal microscope: This microscope uses a laser to scan a sample at different depths, which is then used to construct a 3D image with high resolution.
From these descriptions, we can see that the microscope mentioned in the question produces an image from scattered secondary electrons, which directly corresponds to the scanning electron microscope (SEM). Therefore, the correct answer is d. scanning electron microscope.