Question

microscopes are important tools. but do you know the difference between there microscopes and when to use each type? (choose 4)
a the compound light microscope combines the power of lenses and light to enlarge the subject being viewed.
b the stereo microscope allows an object to be viewed three - dimensionally under the lenses.
c very small, live cells, like bacterial cells should be viewed using a scanning electron microscope.
d the scanning electro microscope produces high - resolution, sharp, black and white 3d images.
e if your task was to dissect the mouth parts of a grasshopper, you would use a compound light microscope to assist you.
f electron microscopes differ from light microscopes in that they produce an image of a specimen by using a beam of electrons rather than a beam of light.

Explanation:

• Option A: Compound light microscopes use lenses and light for magnification, which is correct.
• Option B: Stereo microscopes (dissecting microscopes) provide a 3D view, which is accurate.
• Option D: Scanning electron microscopes (SEM) produce high - resolution, black - and - white 3D images, this is a correct characteristic.
• Option F: Electron microscopes use electron beams (instead of light beams) to form an image of the specimen, this is a correct distinction from light microscopes.

Incorrect options:

• Option C: Scanning electron microscopes require the specimen to be dead (due to the vacuum environment and sample preparation), so live bacterial cells can't be viewed with SEM.
• Option E: For dissecting grasshopper mouth parts, a stereo (dissecting) microscope is more suitable, not a compound light microscope.

Answer:

A. The compound light microscope combines the power of lenses and light to enlarge the subject being viewed.
B. The stereo microscope allows an object to be viewed three - dimensionally under the lenses.
D. The scanning electro microscope produces high - resolution, sharp, black and white 3D images.
F. Electron microscopes differ from light microscopes in that they produce an image of a specimen by using a beam of electrons rather than a beam of light.