Portage Learning Microbiology
Module Exam 3 Questions and
Answers 100% PASS
Micrometer—ANSWER-(µm) one-millionth of a meter and is commonly designated at 10-
6m.
Nanometer—ANSWER-(nm) equals 10-9m or one-billionth of a meter.
Resolution—ANSWER-Refers to the distance between two objects at which the objects still
can be seen as separate.
Contrast—ANSWER-The difference in light absorbance between two areas (objects).
Brightfield Microscope—ANSWER-A microscope that uses visible light for illumination; the
specimens are viewed against a white background.
Condenser—ANSWER-Focuses light on specimen.
Iris Diaphragm—ANSWER-Controls the amount of light passing through the specimen.
Objective Lens—ANSWER-The lens on a light microscope that is closest to the stage and
enlarges the image of the specimen.
Ocular Lens—ANSWER-Eyepiece of a microscope.
Module Exam 3 Questions and
Answers 100% PASS
Micrometer—ANSWER-(µm) one-millionth of a meter and is commonly designated at 10-
6m.
Nanometer—ANSWER-(nm) equals 10-9m or one-billionth of a meter.
Resolution—ANSWER-Refers to the distance between two objects at which the objects still
can be seen as separate.
Contrast—ANSWER-The difference in light absorbance between two areas (objects).
Brightfield Microscope—ANSWER-A microscope that uses visible light for illumination; the
specimens are viewed against a white background.
Condenser—ANSWER-Focuses light on specimen.
Iris Diaphragm—ANSWER-Controls the amount of light passing through the specimen.
Objective Lens—ANSWER-The lens on a light microscope that is closest to the stage and
enlarges the image of the specimen.
Ocular Lens—ANSWER-Eyepiece of a microscope.
