M3: Module 3 Review
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- converted.pdf10/20/2026, 4:09:33 AM
Due No due date Points 5 Questions 16 Time Limit None
Attempt History
Attempt Time Score
LATEST Attempt 1 12 minutes 5 out of 5
Score for this quiz: 5 out of 5
Submitted Feb 11 at 12:42am
This attempt took 12 minutes.
Question 1 pts
Define the measurements micrometer and nanometer.
Your Answer:
Micrometer (μm): One micrometer is equal to one millionth of a meter (10^-6 meters).
Nanometer (nm): One nanometer is equal to one billionth of a meter (10^-9 meters).
A micrometer (µm) is defined as being one-millionth of a meter and is commonly designated at 10-6 meters. A nanometer (nm) equals 10-
9 m or one-billionth of a meter.
Question 2 pts
What are the two critical factors that influence your ability to see an object?
Your Answer:
Resolution and contrast.
Resolution and contrast. Resolution refers to the distance between two objects at which the objects still can be seen as separate. Poor or
low resolution means two (or more) objects may appear as one. The contrast is the difference in light absorbance between two objects.
Poor contrast gives a high background and makes the visualization of multiple objects difficult. For instance, trying to identify 2 dark
colored objects at night (low light = low contrast) versus the same 2 objects in the middle of a sunny afternoon (bright light against 2 dark
objects = high contrast).
Question 3 pts
If you wish to increase the amount of light going into a microscope, what part would you adjust?
Your Answer:
The iris diaphragm controls the amount of light that passes through the sample. You must open the iris more light is permitted to pass through to
illuminate the sample.
The iris diaphragm controls the amount of light that passes through the sample and into the objective lens. Thus, as you open the iris
more light is permitted to pass through to illuminate the sample.
This study source was downloaded by 1827175 from cliffsnotes.com on 01-08-2026 16:12:46 GMT -06:00
Question 4 pts
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- converted.pdf10/20/2026, 4:09:33 AM
Due No due date Points 5 Questions 16 Time Limit None
Attempt History
Attempt Time Score
LATEST Attempt 1 12 minutes 5 out of 5
Score for this quiz: 5 out of 5
Submitted Feb 11 at 12:42am
This attempt took 12 minutes.
Question 1 pts
Define the measurements micrometer and nanometer.
Your Answer:
Micrometer (μm): One micrometer is equal to one millionth of a meter (10^-6 meters).
Nanometer (nm): One nanometer is equal to one billionth of a meter (10^-9 meters).
A micrometer (µm) is defined as being one-millionth of a meter and is commonly designated at 10-6 meters. A nanometer (nm) equals 10-
9 m or one-billionth of a meter.
Question 2 pts
What are the two critical factors that influence your ability to see an object?
Your Answer:
Resolution and contrast.
Resolution and contrast. Resolution refers to the distance between two objects at which the objects still can be seen as separate. Poor or
low resolution means two (or more) objects may appear as one. The contrast is the difference in light absorbance between two objects.
Poor contrast gives a high background and makes the visualization of multiple objects difficult. For instance, trying to identify 2 dark
colored objects at night (low light = low contrast) versus the same 2 objects in the middle of a sunny afternoon (bright light against 2 dark
objects = high contrast).
Question 3 pts
If you wish to increase the amount of light going into a microscope, what part would you adjust?
Your Answer:
The iris diaphragm controls the amount of light that passes through the sample. You must open the iris more light is permitted to pass through to
illuminate the sample.
The iris diaphragm controls the amount of light that passes through the sample and into the objective lens. Thus, as you open the iris
more light is permitted to pass through to illuminate the sample.
This study source was downloaded by 1827175 from cliffsnotes.com on 01-08-2026 16:12:46 GMT -06:00
Question 4 pts
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