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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Cell
walls of multicellular plants are composed mainly of _____. a. | cellulose | c. | pectin | b. | vacuoles | d. | chitin | | | | |
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2.
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In a
typical animal cell, the cytoplasm occupies _____. a. | a little more
than half the volume | c. | almost all the
volume | b. | a small part of the volume | d. | one quarter of the volume | | | | |
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3.
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Each
of the following is a main idea of the cell theory except _____. a. | the cell is the
basic unit of organization of organisms | b. | all organisms are composed of cells | c. | all cells are
similar in structure and function | d. | all cells come from preexisting cells | | |
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4.
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One
advantage of electron microscopes over light microscopes is their _____. a. | higher
magnification | c. | two-dimensional
image | b. | use of live specimens | d. | size | | | | |
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5.
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In a
chloroplast, the stacks of membranous sacs are called _____. a. | plastids | c. | stroma | b. | grana | d. | thylakoid membrane | | | | |
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6.
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Folded membranes are an advantage to a cell because _____. a. | cell processes
can be more efficient | b. | the membranes provide a large surface
area | c. | the membranes
form interconnected compartments | d. | all of these | | |
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7.
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Which
of the following structures is the most complex? a. | organ | c. | cell | b. | organ system | d. | tissue | | | | |
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8.
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Which
of the following is NOT true of membranes? a. | Ribosomes are sometimes attached to folded
membranes. | b. | Folded membranes increase surface area for
efficiency. | c. | Endoplasmic reticulum is made up of folded
membranes. | d. | Folded membranes do not form compartments in the
cell. | | |
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9.
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A
major difference between a compound light microscope and a transmission microscope is that a light
microscope image _____. a. | requires thin slices | b. | allows you to
see fine detail of organelles | c. | can be made from living, unstained
materials | d. | uses magnet lenses | | |
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10.
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When
a cell is ready to reproduce, its DNA is packed into _____. a. | chromosomes | c. | nucleoli | b. | nucleoids | d. | chromatin | | | | |
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