Biology Laboratory Manual, 6/e

Darrell S. Vodopich, Baylor University
Randy Moore, University of Minnesota--Minneapolis

Multiple Choice quiz for Exercise 2: The Microscope

Choose the one answer that best answers the question.


1	Always begin examining microscope slides with which power objective?
		A)	high
		B)	low
		C)	100X
		D)	It doesn’t matter which objective


2	What must be done to a specimen to increase the contrast of the structures viewed?
		A)	illuminated
		B)	stained
		C)	placed under a cover slip
		D)	thinly sliced


3	Which system consists of a camera and/or a video screen?
		A)	viewing and recording
		B)	illuminating
		C)	imaging
		D)	contrasting


4	Microscopes that are____will remain nearly focused after the low-power objective lens is changed to the high-power objective lens.
		A)	monocular
		B)	parcentered
		C)	parfocal
		D)	properly adjusted


5	At high power, always use which adjustment knob to focus the image?
		A)	fine
		B)	coarse
		C)	diaphragm
		D)	It doesn’t matter.


6	Which objective provides the greatest depth of field?
		A)	high
		B)	100X
		C)	low
		D)	This depends on if the specimen is stained.


7	Which objective provides the greatest field of view?
		A)	high
		B)	100X
		C)	low
		D)	This depends on if the specimen is stained.


8	If the ocular of a microscope is 10X and the objective is set at 100X, then what is the total magnification of the microscope?
		A)	10X
		B)	43X
		C)	1000X
		D)	430X


9	The field of view of a microscope with a 10X ocular and a 4X objective is 5mm. What is will be the field of view with a 10X objective?
		A)	3.14 mm²
		B)	20 mm
		C)	2 mm²
		D)	2mm


10	For which of the following specimens would you use a dissecting scope?
		A)	human skin cells
		B)	E. coli
		C)	insect mouth parts
		D)	newspaper print

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