Bio 4C/D: Viruses and Bacteria (Ch. 20 - HOLT)
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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The
study of viruses is a part of biology because a. | they belong to the kingdom
Monera. | c. | they are living
organisms. | b. | they are about to become
extinct. | d. | they are active
inside living cells. | | | | |
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2.
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The
tobacco mosaic virus a. | is able to be crystallized. | c. | is smaller than a bacterium. | b. | causes disease
in tobacco plants. | d. | All of the
above | | | | |
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3.
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Viruses a. | are cellular organisms. | b. | reproduce only
in living cells. | c. | have nuclei and organelles. | d. | are surrounded
by a polysaccharide coat. | | |
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4.
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A
viral disease that causes painful swelling of a salivary gland is a. | mumps. | c. | polio. | b. | AIDS. | d. | measles. | | | | |
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5.
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Viruses are a. | photosynthetic. | c. | parasitic. | b. | chemosynthetic. | d. | All of the
above | | | | |
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6.
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Biologists now know that viruses a. | are the smallest organisms. | b. | consist of a
protein surrounded by a nucleic acid coat. | c. | contain RNA or DNA in a protein coat. | d. | all form the
same crystalline shape. | | |
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7.
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The
capsid of a virus is the a. | protective outer coat. | c. | nucleus. | b. | cell
membrane. | d. | cell wall and
membrane complex. | | | | |
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8.
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An
animal virus enters its host cell by a. | being injected into the cell. | b. | penetrating a
rip in the cell wall. | c. | punching a hole in the cell membrane. | d. | endocytosis
across the cell membrane. | | |
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9.
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The
cycle of viral infection, replication, and cell destruction is called the a. | lysogenic
cycle. | c. | lytic
cycle. | b. | metabolic cycle. | d. | None of the above | | | | |
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10.
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A
pathogen is an agent that is a. | beneficial to humans. | c. | harmful to living organisms. | b. | harmful only to
plants. | d. | nearly
extinct. | | | | |
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11.
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It is
important to distinguish between Gram-positive and Gram-negative bacteria in diagnosing a bacterial
infection because a. | Gram-negative
and Gram-positive bacteria differ in their response to different
antibiotics. | b. | Gram-positive bacteria never cause fatal
diseases. | c. | Gram-positive bacteria destroy antibiotics, preventing them
from working. | d. | Gram-positive bacteria do not respond to many
antibiotics. | | |
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12.
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The
chromosomes of bacteria a. | contain numerous types of organelles. | b. | are divided into
compartments. | c. | vary in number, depending on the species of
bacteria. | d. | contain a single circular piece of
DNA. | | |
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13.
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One
difference between the cells in a human body and bacterial cells is that bacterial cells
have a. | an outer cell
wall made up of lipids. | b. | an outer cell wall made up of polysaccharides and
proteins. | c. | no DNA. | d. | no
ribosomes. | | |
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14.
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Structures found in eukaryotic cells but not in a bacterial cells
are a. | nuclei. | c. | membrane-bound
organelles. | b. | linear chromosomes. | d. | All of the above | | | | |
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15.
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Refer
to the illustration above. The shape represented by Organism A applies to the bacterial
genus a. | Streptococcus, which causes strep throat. | b. | Leptospira, which can cause urinary tract infections in
humans. | c. | Bacillus, which produces
antibiotics. | d. | Penicillium, which produces
penicillin. | | |
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16.
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Which
of the following might be found in the cytoplasm of a bacterial cell? a. | chloroplasts | c. | mitochondria | b. | Golgi bodies | d. | None of the above | | | | |
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17.
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Bacterial cells have a. | a cell wall only. | b. | a cell membrane
only. | c. | both a cell membrane and an outer cell
wall. | d. | a cell wall inside their cell
membrane. | | |
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18.
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Bacterial endospores a. | occur where there is plenty of available
food. | b. | allow certain species to survive harsh environmental
conditions. | c. | are similar to human tumors. | d. | can cause growth
abnormalities in plants. | | |
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19.
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Cell
organelles that Escherichia coli and other bacteria have in common with eukaryotes
are a. | chloroplasts. | c. | nuclei. | b. | mitochondria. | d. | ribosomes. | | | | |
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20.
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Escherichia coli is an example of a bacterium that has short, thin, hairlike
projections called a. | pili. | c. | cocci. | b. | cilia. | d. | ribosomes. | | | | |
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21.
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Antibiotics a. | include penicillin, tetracycline, and
streptomycin. | b. | may prevent bacteria from making new cell
walls. | c. | are effective treatments for bacterial
diseases. | d. | All of the above | | |
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22.
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Cholera is usually transmitted by a. | insects. | c. | contaminated water. | b. | sexual
contact. | d. | airborne water
droplets. | | | | |
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23.
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A
bacterial disease carried from rodents to humans by fleas is a. | tuberculosis. | c. | cholera. | b. | bubonic plague. | d. | Lyme disease. | | | | |
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24.
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Lyme
disease : ticks:: a. | tuberculosis :
food and feces | c. | typhus :
lice | b. | cholera : human
tubercles | d. | bubonic plague :
fleas | | | | |
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25.
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Mining companies harvest copper or uranium by using a. | photosynthetic
bacteria. | c. | cyanobacteria. | b. | heterotrophic bacteria. | d. | chemoautotrophic bacteria. | | | | |
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