Multiple Choice
Identify the
letter of the choice that best completes the statement or answers the question.
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1.
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One
advantage of electron microscopes over light microscopes is their _____. a. | use of live
specimens | c. | size | b. | higher magnification | d. | two-dimensional image | | | | |
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2.
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In a
chloroplast, the stacks of membranous sacs are called _____. a. | grana | c. | stroma | b. | thylakoid membrane | d. | plastids | | | | |
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3.
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A
major difference between a compound light microscope and a transmission microscope is that a light
microscope image _____. a. | uses magnet lenses | b. | allows you to
see fine detail of organelles | c. | can be made from living, unstained
materials | d. | requires thin slices | | |
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4.
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Each
of the following is a main idea of the cell theory except _____. a. | all cells come
from preexisting cells | b. | all organisms are composed of cells | c. | all cells are
similar in structure and function | d. | the cell is the basic unit of organization of
organisms | | |
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5.
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Which
of the following structures is the most complex? a. | organ system | c. | cell | b. | tissue | d. | organ | | | | |
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6.
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The
term least closely related to the others is _____. a. | microfilament | c. | cell
juncture | b. | cytoskeleton | d. | microtubule | | | | |
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7.
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Which
of the following is NOT true of membranes? a. | Endoplasmic reticulum is made up of folded
membranes. | b. | Ribosomes are sometimes attached to folded
membranes. | c. | Folded membranes increase surface area for
efficiency. | d. | Folded membranes do not form compartments in the
cell. | | |
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8.
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Chitin is a component of _____ cell walls. a. | fungus | c. | bacterial | b. | plant | d. | all of these | | | | |
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9.
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Who
concluded that all plants are made of living cells? a. | Schleiden | c. | Virchow | b. | Schwann | d. | Hooke | | | | |
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10.
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What
do electron microscopes use to focus and magnify an image? a. | X
rays | c. | light | b. | glass lenses | d. | electromagnets | | | | |
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