Microbiology Midterm Review

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

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