BIOD 171
MODULE 3
ACTUAL
EXAM
questions
and answers
, BIOD 171 EXAM MODULE 3
. A micrometer is defined as
A. 10-3
B. 10-6
C.10-9
D. 10-12
B. A micrometer is one-millionth of a meter.
Exam Page 2
Answer Key
1. Resolution and contrast are two critical factors that influence your ability to see an object. Explain
each.
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.
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 objectsin the middle of a sunny afternoon
MODULE 3
ACTUAL
EXAM
questions
and answers
, BIOD 171 EXAM MODULE 3
. A micrometer is defined as
A. 10-3
B. 10-6
C.10-9
D. 10-12
B. A micrometer is one-millionth of a meter.
Exam Page 2
Answer Key
1. Resolution and contrast are two critical factors that influence your ability to see an object. Explain
each.
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.
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 objectsin the middle of a sunny afternoon
