1.03 New Technology
Answer Key
Question 1 (Worth 2 points)
What would be the magnification of a specimen viewed with a compound light microscope that has an objective power of 10x and an ocular lens power of 5x?
5x
15x
500x
50x
Points earned on this question: 2
Question 2 (Worth 2 points)
What is a limitation of using electron microscopes to view specimens?
You cannot view transparent specimens because of the microscope’s low resolution.
Electron beams are dangerous and can only be used sparingly.
You cannot view live specimens because the necessary preparation kills cells.
Resolution is weak and cannot make out details of very small specimens.
Points earned on this question: 2

Question 3 (Worth 2 points)
What is the best microscope to get a detailed view of the parts inside of a preserved plant cell?
Transmission electron microscope
Scanning electron microscope
Compound light microscope
Dissecting microscope
Points earned on this question: 2
Question 4 (Worth 5 points)
Compare and contrast a compound light microscope and a transmission electron microscope. Be sure to discuss the structure and operation of each, as well as the function and usefulness of each when examining specimens.
Essay Submission
A Compound Light Microscope is used in the schools and colleges a lot. It has two lenses; the objective lens and the ocular lens. The Compound light microscope usually has more than one magnification power, ranging from 40 times up to 400 or even 1,000 times the true size of the specimen. It is also used to view tissue samples, blood, micro-organisms in pond water, microscopic cells, and some of the larger details within the cells.
A Transmission Electron Microscope has the same basic principles as the light microscope, though, the microscope instead of using light, it uses electrons. These microscopes use electrons as a "light source". Due to the low wavelength it makes, it is possible to get a resolution better than with a light microscope.
Essay Feedback
What do the images generated by a TEM look like?

Points earned on this question: 4
Question 5 (Worth 5 points)
Describe the details you were able to see when viewing specimens with the scanning electron microscope in the microscope activity.
Essay Submission
When you use a scanning electron microscope, you are able to see the structure of the sample you have. You can see what the sample is made of and what living organisms it may have in images generated in 3D, and black and white.
Essay Feedback
Perfect!
Points earned on this question: 5