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Microbiology Midterm Review

145 Questions  I  By Tgerdel
Microbiology Quizzes & Trivia
Practice test for the Microbiology Midterm.

  
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1.  A microaerophile
A.
B.
C.
D.
E.
2.  When buds remain attached, they form a chain of yeast cells called
A.
B.
C.
D.
E.
3.  Cilia are found in certain
A.
B.
C.
D.
E.
4.  The term phototroph refers to an organism that
A.
B.
C.
D.
E.
5.  Which method often results in colonies developing down throughout the agar and some colonies on the surface?
A.
B.
C.
D.
E.
6.  Spontaneous generation is the belief that
A.
B.
C.
D.
E.
7.  Sequences of DNA that are identical when read from the 5' to 3' direction on one strand and the 3' to 5' direction on the other strand are
A.
B.
C.
D.
E.
8.  Viruses that cause infection resulting in alternating periods of activity with symptoms and inactivity without symptoms are called
A.
B.
C.
D.
E.
9.  Helminths are
A.
B.
C.
D.
E.
10.  The term that refers to the purposeful addition of microorganisms into a laboratory nutrient medium is
A.
B.
C.
D.
E.
11.  Which of the following is essential for development of discrete, isolated colonies?
A.
B.
C.
D.
E.
12.  Which term is not used to describe bacterial cell shapes?
A.
B.
C.
D.
E.
13.  All of the following are examples of different types of microbiological media except
A.
B.
C.
D.
E.
14.  Bacteria that require special growth factors and complex organic substances are called
A.
B.
C.
D.
E.
15.  All of the following are correct about food irradiation except
A.
B.
C.
D.
E.
16.  Disease-causing microorganisms are called
A.
B.
C.
D.
E.
17.  Virus capsids are made from subunits called
A.
B.
C.
D.
E.
18.  The cell's series of tunnel-like membranes functioning in transport and storage are the
A.
B.
C.
D.
E.
19.  Infectious naked strands of RNA are called
A.
B.
C.
D.
E.
20.  The function of bacterial endospores is
A.
B.
C.
D.
E.
21.  HEPA filters are used to remove microbes from
A.
B.
C.
D.
E.
22.  What is the correct sequence for a Gram stain?
A.
B.
C.
D.
E.
23.  A microbiologist decides to use a nutrient medium that contains thioglycollic acid.  What type of microbe is she attempting to culture?
A.
B.
C.
D.
E.
24.  The RNA molecules that carry amino acids to the ribosomes during protein synthesis are called
A.
B.
C.
D.
E.
25.  A microbiologist inoculates Staphylococcus aureus into a culture medium.  Following incubation, both Staphylococcus aureus and Staphylococcus epidermidis are determined to be growing in this culture.  What is the most likely explanation?
A.
B.
C.
D.
E.
26.  Koch's postulates are criteria used to establish that
A.
B.
C.
D.
E.
27.  Chitin is a chemical component of the cell walls of
A.
B.
C.
D.
E.
28.  The organelle involved in intracellular digestion of food particles is the
A.
B.
C.
D.
E.
29.  Protists include
A.
B.
C.
D.
E.
30.  Microbiological contaminants are best described as
A.
B.
C.
D.
E.
31.  In bacterial cells, the electron transport system is located in the
A.
B.
C.
D.
E.
32.  Organisms that feed on dead organisms for nutrients are called
A.
B.
C.
D.
E.
33.  All of the following are correct about agar except
A.
B.
C.
D.
E.
34.  The movement of substances from higher to lower concentration across a semipermeable membrane that must have a specific protein carrier but no energy expenditure is called
A.
B.
C.
D.
E.
35.  These structures are used by bacteriophages to attach to host cell receptors
A.
B.
C.
D.
E.
36.  If a microbiologist is studying a specimen at a total magnification of 950X, what is the magnifying power of the objective lens is 10X?
A.
B.
C.
D.
E.
37.  The time interval from parent cell to two new daughter cells is called the
A.
B.
C.
D.
E.
38.  Creutzfeld-Jacob disease is
A.
B.
C.
D.
E.
39.  Which of the following is a unique characteristic of viruses that distinguishes them from the other major groups of microorganisms?
A.
B.
C.
D.
E.
40.  When humans manipulate the genes of microorganisms the process is called
A.
B.
C.
D.
E.
41.  Physical agents for controlling microbial growth include all the following except
A.
B.
C.
D.
E.
42.  All of the following are correct about biofilms except
A.
B.
C.
D.
E.
43.  Visible, clear, well-defined patches in a monolayer of virus-infected cells in a culture are called
A.
B.
C.
D.
E.
44.  Among the microorganisms, various genomes can include
A.
B.
C.
D.
E.
45.  The duplication of a cell's DNA is called
A.
B.
C.
D.
E.
46.  The most immediate result of destruction of a cell's ribosomes would be
A.
B.
C.
D.
E.
47.  Which of the following diseases is transmitted by mosquitoes?
A.
B.
C.
D.
E.
48.  Fungi that grow as yeast at one temperature but will grow as mold at another temperature are called
A.
B.
C.
D.
E.
49.  Endospores are
A.
B.
C.
D.
E.
50.  A bacterial cell exhibiting chemotaxis probably has
A.
B.
C.
D.
E.
51.  All of the following structures contribute to the ability of pathogenic bacteria to cause disease except
A.
B.
C.
D.
E.
52.  The breakdown of peptidoglycan to N-acetylmuramic acid, N-acetylglucosamine and peptides is an example of
A.
B.
C.
D.
E.
53.  Eucaryotic flagella differ from procaryotic flagella because only eucaryotic flagella
A.
B.
C.
D.
E.
54.  Bacterial conjugation involves
A.
B.
C.
D.
E.
55.  Organisms called parasites are
A.
B.
C.
D.
E.
56.  Pasteur used swan-neck flasks in his experiments to prove that
A.
B.
C.
D.
E.
57.  The outcome of the Gram stain is based on differences in the cell's
A.
B.
C.
D.
E.
58.  The motile, feeding stage of protozoa is called the
A.
B.
C.
D.
E.
59.  A mutation that changes a normal codon to a stop codon is called a
A.
B.
C.
D.
E.
60.  The movement of substances from lower to higher concentration across a semipermeable membrane that must have a specific protein carrier and use energy is called
A.
B.
C.
D.
E.
61.  Microorganisms require large quantities of this nutrient for use in cell structure and metabolism:
A.
B.
C.
D.
E.
62.  Sources for human infection with worms are all of the following except
A.
B.
C.
D.
E.
63.  An organelle that is a stack of flattened, membranous sacs and functions to receive, modify, and package proteins for cell secretion is the
A.
B.
C.
D.
E.
64.  All bacterial cells have
A.
B.
C.
D.
E.
65.  A microbiologist makes a fixed smear of bacterial cells and stains them with Loeffler's methylene blue.  All the cells appear blue under the oil lens.  This is an example of
A.
B.
C.
D.
E.
66.  Microorganisms require small quantities of this nutrient for enzyme function and maintenance of protein structure:
A.
B.
C.
D.
E.
67.  Which of the following will not support viral cultivation?
A.
B.
C.
D.
E.
68.  Which is mismatched?
A.
B.
C.
D.
E.
69.  Thermococcus litoralis and Thermus aquaticus are thermophilic bacteria that are
A.
B.
C.
D.
E.
70.  Which of the following is correct about viruses?
A.
B.
C.
D.
E.
71.  Infectious protein particles are called
A.
B.
C.
D.
E.
72.  When a rod shaped bacteria is short and plump, it is called a
A.
B.
C.
D.
E.
73.  The correct sequence of events in viral multiplication is
A.
B.
C.
D.
E.
74.  Which common hospital pathogen is able to grow abundantly in soap dishes?
A.
B.
C.
D.
E.
75.  A microbiologist inoculates Staphylococcus epidermidis and Escherichia coli into a culture medium.  Following incubation, only the E. coli grows in the culture.  What is the most likely explanation?
A.
B.
C.
D.
E.
76.  Which is incorrect about chocolate agar?
A.
B.
C.
D.
E.
77.  Which of the following is not associated with every virus?
A.
B.
C.
D.
E.
78.  In the cell, energy released by electrons is often used to phosphorylate
A.
B.
C.
D.
E.
79.  The microorganisms that do not have a nucleus in their cells are called
A.
B.
C.
D.
E.
80.  The surgeon who advocated using disinfectants on hands and in the air prior to surgery was
A.
B.
C.
D.
E.
81.  The use of chemical agents directly on exposed body surfaces to destroy or inhibit vegetative pathogens is
A.
B.
C.
D.
E.
82.  Enzymes are
A.
B.
C.
D.
E.
83.  EcoRI and HindIII are
A.
B.
C.
D.
E.
84.  Helical and icosahedral are terms used to describe the shapes of a virus
A.
B.
C.
D.
E.
85.  The antiparallel arrangement within DNA molecules refers to
A.
B.
C.
D.
E.
86.  Which organelle contains cristae where enzymes and electron carriers for aerobic respiration are found?
A.
B.
C.
D.
E.
87.  Viruses have all the following except
A.
B.
C.
D.
E.
88.  Which of the following are the main decomposers of the earth?
A.
B.
C.
D.
E.
89.  Which of the following is not considered a microorganism?
A.
B.
C.
D.
E.
90.  The various techniques by which scientists manipulate DNA in the lab is called
A.
B.
C.
D.
E.
91.  Analysis of DNA fragments in gel electrophoresis involves
A.
B.
C.
D.
E.
92.  Which of the following is the correct way to write the scientific name of this bacterium?
A.
B.
C.
D.
E.
93.  Filamentous fungi are called
A.
B.
C.
D.
E.
94.  The shortest time required to kill all the microbes in a sample at a specified temperature is called the
A.
B.
C.
D.
E.
95.  This microscope achieves the greatest resolution and highest magnification:
A.
B.
C.
D.
E.
96.  Transgenic animals
A.
B.
C.
D.
E.
97.  The specimen preparation that is best for viewing cell motility is
A.
B.
C.
D.
E.
98.  Which of the following is a scientific name?
A.
B.
C.
D.
E.
99.  Sterilization is achieved by
A.
B.
C.
D.
E.
100.  Peptidoglycan is a unique macromolecule found in bacterial
A.
B.
C.
D.
E.
101.  A scientist collects grass clippings to find the source of an outbreak of tularemia is an example of working in the field of
A.
B.
C.
D.
E.
102.  Which type of medium is able to distinguish different species or types of microorganisms based on an observable change in the colonies or in the medium?
A.
B.
C.
D.
E.
103.  Spirochetes have a twisting and flexing locomotion due to appendages called
A.
B.
C.
D.
E.
104.  The process that destroys or removes all microorganisms and microbial forms including bacterial endospores is
A.
B.
C.
D.
E.
105.  Organelles found in algae but not found in protozoa or fungi are the
A.
B.
C.
D.
E.
106.  The primary purpose of staining cells on a microscope slide is to
A.
B.
C.
D.
E.
107.  The DNA of microorganisms is made up of subunits called
A.
B.
C.
D.
E.
108.  The transfer of genes during bacterial conjugation involves rigid, tubular appendages called
A.
B.
C.
D.
E.
109.  A bacterial genus that has waxy mycolic acid in the cell walls is
A.
B.
C.
D.
E.
110.  In which pathway is the most NADH generated?
A.
B.
C.
D.
E.
111.  All of the following are correct about prokaryotes except
A.
B.
C.
D.
E.
112.  Formation of peptide bonds between amino acids to build a polypeptide would be called
A.
B.
C.
D.
E.
113.  Satellite viruses are
A.
B.
C.
D.
E.
114.  The study of evolutionary relationships among organisms is called
A.
B.
C.
D.
E.
115.  Which of the following is found in eucaryotic cells but not in procaryotic cells?
A.
B.
C.
D.
E.
116.  Which of the following characteristics refers to the microscope's ability to show two separate entities as separate and distinct?
A.
B.
C.
D.
E.
117.  The virus-induced, specific damage to the host cell that can be seen in a light microscope is called
A.
B.
C.
D.
E.
118.  During aerobic cellular respiration, the final electron acceptor is
A.
B.
C.
D.
E.
119.  When patient tissues are transfected with viruses carrying a needed, normal human gene, the technique is called
A.
B.
C.
D.
E.
120.  The Five I's of studying microorganisms include all of the following except
A.
B.
C.
D.
E.
121.  The easiest microbial forms to kill or inhibit are
A.
B.
C.
D.
E.
122.  Viruses acquire envelopes around their nucleocapsids during
A.
B.
C.
D.
E.
123.  Groups of three consecutive bases along the DNA of a gene have the code for one
A.
B.
C.
D.
E.
124.  All of the following are found in some or all protozoa except
A.
B.
C.
D.
E.
125.  Semiconservative replication refers to
A.
B.
C.
D.
E.
126.  Host range is limited by
A.
B.
C.
D.
E.
127.  Which cell structure is an important agent in modern genetic engineering techniques?
A.
B.
C.
D.
E.
128.  Amplification of DNA is accomplished by
A.
B.
C.
D.
E.
129.  The type of microscope in which you would see brightly illuminated specimens against a black background is
A.
B.
C.
D.
E.
130.  The term heterotroph refers to an organism that
A.
B.
C.
D.
E.
131.  All of the following is correct about treating viral diseases except
A.
B.
C.
D.
E.
132.  A technique that separates a readable pattern of DNA fragments is
A.
B.
C.
D.
E.
133.  During which of the phases of cellular respiration is the majority of ATP formed?
A.
B.
C.
D.
E.
134.  This is often used in forensic science to distinguish one sequence of DNA from another by comparing the sequence of the strands at specific loci:
A.
B.
C.
D.
E.
135.  Larvae and eggs are developmental forms of
A.
B.
C.
D.
E.
136.  The use of energy by a cell to enclose a substance in its membrane by forming a vacuole and engulfing it is called
A.
B.
C.
D.
E.
137.  An organism's genotype includes all the following except they
A.
B.
C.
D.
E.
138.  Which of the following diseases probably involves microbial infection?
A.
B.
C.
D.
E.
139.  Enzymes that can function at boiling water temperatures or other harsh conditions would be termed
A.
B.
C.
D.
E.
140.  The deliberate removal of genetic material from one organism and combining it with the genetic material of another organism is a specific technique called
A.
B.
C.
D.
E.
141.  Host cells of viruses include
A.
B.
C.
D.
E.
142.  An organism with a temperature growth range of 45 degrees Celsius to 60 degrees Celsius would be called a/an
A.
B.
C.
D.
E.
143.  The term that refers to the presence of flagella all over the cell surface is
A.
B.
C.
D.
E.
144.  The phase of the bacterial growth curve in which newly inoculated cells are adjusting to their new environment, metabolizing but not growing is the
A.
B.
C.
D.
E.
145.  The core of every virus particle always contains
A.
B.
C.
D.
E.
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