- What magnification is used if you observe a microorganism with a
microscope whose object is 100×and whose ocular lens is 10×?
(a) 1000×magnification
(b) 100×magnification
(c) 10×magnification
(d) 10,000×magnification - What is the function of an illuminator?
(a) To control the temperature of the specimen
(b) To keep the specimen moist
(c) An illuminator is the light source used to observe a specimen under
a microscope
(d) To keep the specimen dry - What is the area seen through the ocular eyepiece called?
(a) The stage
(b) The objective
(c) The display
(d) The field of view - How do you maintain good resolution of a specimen at magnifications
greater than 100×?
(a) Display the specimen on a television monitor.
(b) Use a single ocular eyepiece.
(c) Immerse the specimen in oil.
(d) Avoid moving the specimen. - What is a micrograph?
(a) A microscopic photograph taken by an electron microscope
(b) A microscopic diagram of a specimen
(c) A microscopic photograph taken by a light microscope
(d) A growth diagram of a specimen - What is a smear?
(a) A smear is a preparation process in which a specimen is spread on a
slide.
(b) A smear is a preparation process in which a specimen is dyed.
(c) A smear is a process in which a specimen is moved beneath a micro-
scope.
(d) A smear is a process used to identify a specimen.
CHAPTER 3 Observing Microorganisms^65