Multiple Choice
Identify the
letter of the choice that best completes the statement or answers the question.
|
|
|
1.
|
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 | | | | |
|
|
|
2.
|
A
viral disease that causes painful swelling of a salivary gland is a. | mumps. | c. | polio. | b. | AIDS. | d. | measles. | | | | |
|
|
|
3.
|
Viruses are a. | photosynthetic. | c. | parasitic. | b. | chemosynthetic. | d. | All of the
above | | | | |
|
|
|
4.
|
A
typical virus consists of a. | a protein coat and a cytoplasm core. | b. | a carbohydrate
coat and a nucleic acid core. | c. | a protein coat and a nucleic acid
core. | d. | a polysaccharide coat and a nucleic acid
core. | | |
|
|
|
|
|
|
5.
|
Refer
to the illustration above. Which structure represents RNA? a. | structure
B | c. | structure
D | b. | structure
C | d. | structure
E | | | | |
|
|
|
6.
|
A
membranous envelope surrounding some viruses may be composed of a. | lipids. | c. | glycoproteins. | b. | proteins. | d. | All of the above | | | | |
|
|
|
7.
|
viruses : host cells:: a. | photosynthetic bacteria : chemosynthetic
bacteria | b. | bacteria : viruses | c. | antibiotics :
bacteria | d. | cyanobacteria : chlorophyll | | |
|
|
|
8.
|
HIV
can be transmitted a. | through sexual contact. | b. | through the
sharing of nonsterile needles. | c. | to infants during pregnancy or through breast
milk. | d. | All of the above | | |
|
|
|
9.
|
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. | | |
|
|
|
10.
|
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. | | |
|
|
|
|
|
|
11.
|
Refer
to the illustration above. Which of the diagrams has a shape like the Bacillus bacterial
genus? a. | Organism
A | c. | Organism
C | b. | Organism
B | d. | None of the
above | | | | |
|
|
|
12.
|
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. | | |
|
|
|
13.
|
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 | | | | |
|
|
|
14.
|
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. | | |
|
|
|
15.
|
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. | | |
|
|
|
16.
|
Bacteria can be classified according to their a. | type of cell
walls. | c. | Gram-staining
characteristics. | b. | methods of obtaining energy. | d. | All of the above | | | | |
|
|
|
17.
|
photosynthetic bacteria : sunlight:: a. | chemotrophic
bacteria : dead organisms | b. | chemoautotrophic bacteria : inorganic
molecules | c. | photosynthesis : nitrification | d. | heterotrophic
bacteria : photosynthesis | | |
|
|
|
18.
|
Cell
organelles that Escherichia coli and other bacteria have in common with eukaryotes
are a. | chloroplasts. | c. | nuclei. | b. | mitochondria. | d. | ribosomes. | | | | |
|
|
|
19.
|
Bacterial cells such as Escherichia coli transfer pieces of genetic material in
a process called a. | binary
fission. | c. | conjugation. | b. | mitosis. | d. | sexual reproduction. | | | | |
|
|
|
20.
|
Escherichia coli is an example of a bacterium that has short, thin, hairlike
projections called a. | pili. | c. | cocci. | b. | cilia. | d. | ribosomes. | | | | |
|
|
|
21.
|
Alexander Fleming, a British bacteriologist, is credited with the discovery
of a. | photosynthetic
bacteria. | c. | tuberculosis. | b. | antibodies. | d. | penicillin. | | | | |
|
|
|
22.
|
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 | | |
|
|
|
23.
|
Antibiotics are ineffective against viral infections because a. | viruses are
protected inside their host cells. | b. | viruses have enzymes that inactivate the
antibiotics. | c. | antibiotics interfere with metabolic processes that viruses do
not perform. | d. | viral protein coats block the antibiotics from entering the
virus. | | |
|
|
|
24.
|
Cholera is usually transmitted by a. | insects. | c. | contaminated water. | b. | sexual
contact. | d. | airborne water
droplets. | | | | |
|
|
|
25.
|
Mining companies harvest copper or uranium by using a. | photosynthetic
bacteria. | c. | cyanobacteria. | b. | heterotrophic bacteria. | d. | chemoautotrophic bacteria. | | | | |
|