Microbio 509

88 Questions  I  By Hyprlt
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 Microbio 509
Questions are taken from Carmen, microbiologyplace. Com (P) (pre-tests chap 1 and 2,

  
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1.  The bacterium Autumium quarterii has an inner membrane and a thick PG layer. After A. quarterii is Gram stained, how would you expect it to appear under the oil immersion lens?
A.
B.
C.
D.
2.  Which one of the following statements is TRUE concerning hyphae?
A.
B.
C.
D.
3.  You observe a sample of living bacteria under the microscope in lab and notice that they all seem to be moving in the same direction. This movement could best be described as,
A.
B.
C.
D.
4.  Which one of the following is used to calculate the resolving power of the lens of a compound light microscope?
A.
B.
C.
D.
5.  A 3-phase streak was done in lab to,
A.
B.
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D.
6.  Circle TWO of the following lab rules that are examples of using aseptic technique.
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B.
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D.
E.
7.  What is one way you can visually tell if a live organism you are observing in a wet mount of ahay infusion is prokaryotic or eukaryotic?
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B.
C.
D.
8.  Which one of the following microscopes should you use to observe bacteria that have been Gram stained?
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B.
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D.
E.
9.  Circle the correct answers in the statement below:Most of the dyes used to stain bacteria are (basic or acidic) since most bacteria have an overall (positive, negative) charge.
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B.
C.
D.
10.  Where should you dispose of each of the following in lab: (NOTE: If biohazard container is partof any of your answers, be sure to describe as either the one on your lab bench or the one on the cart.) Gauze used to clean your microscope?
11.  Where should you dispose of each of the following in lab: (NOTE: If biohazard container is partof any of your answers, be sure to describe as either the one on your lab bench or the one on the cart.) Culture in a Petri dish?
12.  One objective lens on the compound light microscope MUST always be used with immersion oil. It is also the ONLY one that can be used with immersion oil. The magnification of this objective lens is
A.
B.
C.
D.
13.  Which one of the following slides will you view using the 100X oil immersion lens? (Lab 1)
A.
B.
C.
D.
14.  Where should you dispose of gauze used to clean immersion oil off of your microscope?
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B.
C.
D.
15.  Before you return your microscope to its storage cabinet, what should you have your lab instructor do?
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B.
C.
D.
16.  You will use a sterile swab to inoculate your plate during this exercise. Where should you dispose of the swab and the wrapper?
A.
B.
C.
D.
17.  Which of the following is an advantage of an electron microscope over a light microscope?
A.
B.
C.
D.
18.  In which one of the following microscopes might light waves be added together to make endospores (or other cellular structures) appear very bright when viewed under the microscope?
A.
B.
C.
D.
19.  Which of the following microbes that you will either use or observe this lab period are bacteria?
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B.
C.
D.
20.  Which of the following is TRUE concerning the yeast form of fungi?
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B.
C.
D.
21.  A student takes a sample from a colony growing on a plate and makes a wet mount. When she observes the sample using the 40X objective, she notes the presence of buds. The microbes in the colony are likely
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B.
C.
D.
22.  If you look at a sample from hay infusion and see very small microbes moving but no cilia or flagella are visible, the microbes are most likely
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B.
C.
D.
23.  When taking a sample from a broth culture, why should you vortex the tube?
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B.
C.
D.
24.  When you flame sterilize your inoculating loop, you must hold the inoculating loop in the flame until which of the following glows red hot?
A.
B.
C.
D.
25.  Which of the following are LIGHT microscopes?
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B.
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26.  When comparing the images produced by the SEM and the TEM, the image produced by the SEM
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D.
27.  Which of the following microbes are eukaryotic?
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B.
C.
D.
28.  Most fungi are described as hyphal. Hyphae form mats of growth known as
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B.
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D.
29.  Which of the following would be a way to microscopically distinguish bacteria from yeast?
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B.
C.
D.
30.  If you look at a sample from hay infusion and see microbes moving with visible cilia or flagella, the microbes must be
A.
B.
C.
D.
31.  When making a wet mount from a broth culture, how should you remove the cap of tube of culture?
A.
B.
C.
D.
32.  When you flame sterilize your inoculating loop, you must hold the inoculating loop in the flame until which of the following glows red hot?
A.
B.
C.
D.
33.  The first observations of bacteria were made by ________. P
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D.
34.  All of the following scientists performed experiments that supported the theory of biogenesis except ________. P
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D.
35.  Working with the French wine industry, Louis Pasteur developed a process that ________. P
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36.  West Nile Virus is transmitted to humans by _______. P
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D.
37.  All of the following are products produced naturally by microorganisms except which one? P
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D.
38.  Which of the following scientists and their discoveries is not correctly matched? P
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D.
39.  Which of the following is a scientific name? P
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D.
40.  Which of the following fields of study and its example are not correctly matched? P
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D.
41.  In the scientific name, Escherichia coli, Escherichia is the _______. P
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D.
42.  Which of the following types of microorganism and its description is not correctly matched? P
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D.
43.  Which of the following is not a characteristic of Bacteria? P
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D.
44.  Which of the following does not belong with the others? P
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D.
45.  The laboratory and medical procedures employed to prevent microbial contamination are called ________. P
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D.
46.  All of the following are examples of biotechnology except ______. P
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D.
47.  Avian influenza has not yet become widespread among humans because ________. P
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B.
C.
D.
48.  Emerging infectious diseases can be due to ________. P
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D.
49.  Which one of the following is an example of bioremediation? P
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B.
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D.
50.  Which of the following processes are beneficial activities of microorganisms? P
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B.
C.
D.
51.  Which of the following best describes the introduction of a human gene into bacteria to induce the bacteria to produce the human protein? P
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D.
52.  Which of the following statements about bacteria is not true? P
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D.
53.  The type of bond holding Na+ and Cl- ions in NaCl is a/an ________. P
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B.
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D.
54.  The type of bond holding C and H atoms in glucose is a/an ________. P
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D.
55.  Which of the following chemical bonds is the strongest? P
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D.
56.  Which of the following molecules contain long hydrocarbon chains? P
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57.  Which of following molecules contains amino groups? P
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D.
58.  Ribose and adenine can be found in RNA and in _______. P
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D.
59.  Which of the following statements about the atom 12C is not true? P
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D.
60.  Which of the following statements about the atom Na (atomic number 11) is not true? P
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B.
C.
D.
61.  Water is an excellent solvent as well as an effective temperature buffer. This is due to ________. PP
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B.
C.
D.
62.  How does the hydrogen ion concentration in lemon juice (pH 2) compare to the hydrogen ion concentration in tomato juice (pH 4)? P
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B.
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D.
63.  Phosphorous is found in all of the following cell components except ________. P
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B.
C.
D.
64.  Nitrogen is found in all of the following cell components except ________. P
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B.
C.
D.
65.  Detergents can combine with lipid molecules. Which part of a cell would you expect detergents to damage? P
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B.
C.
D.
66.  Which of the compounds listed below is an inorganic compound? P
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B.
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D.
67.  Which of the following is an example of anabolism? P
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D.
68.  Which of the following statements about cellulase is true? P
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D.
69.  12C and 14C atoms differ in the ________. P
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D.
70.  What kind of chemical reaction is involved when bacteria are used for the bioremediation of a petroleum spill? P
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D.
71.  Which of the following terms does no belong with the others? P
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D.
72.  Which of the following terms does not belong with the others? P
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D.
73.  The chemical reactions involved in protein synthesis and synthesis of cell wall peptidoglycan are examples of_________ .
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B.
C.
D.
74.  What is the cellular arrangement?OOOOOO
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B.
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D.
75.  Ex. 6, Per. 2: Which one of the following mistakes might cause you to find more than one type of colony on your streak plate?
A.
B.
C.
D.
76.  Ex. 6, Per. 2:  The following suggestion will help you improve your spread plate technique:  When  making a spread plate, do not resuspend your culture.
A.
B.
77.  Ex. 7: In the acid-fast stain, the decolorizning agent(s) is (are)
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B.
C.
D.
E.
78.  Ex. 8: The smear of Bacillus megaterium must be heat fixed before using the capsule stain.
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B.
79.  Ex. 9: Endospores are reproductive cells formed by some bacteria.
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B.
80.  Stains (Ex. 7, 8, 9):  Look at the three photomicrographs above. Which one of the following micrographs represents a sample stained using the Capsule stain?
A.
B.
C.
81.  Ex. 10: The most common method used to separate mixed cultures is the
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D.
82.  Ex.6, Per.2: Which of the following mistakes might cause the growth in all three of the sectors on the streak plate to look the same?
A.
B.
C.
D.
83.  Ex. 6, Per. 2: The following suggestion should help you improve your spread plate technique: When making a spread plate for a lawn of growth, you should streak the plate 3 times in 3 different directions.
A.
B.
84.  Ex. 7: Bacteria with a waxy layer of mycolic acid
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B.
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D.
85.  Ex. 8: A capsule stain is described as a negative stain because
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D.
86.  Ex. 8: After completing the capsule stain, the slides must be air dried rather than blotting with bibulous paper.
A.
B.
87.  Ex. 9: Bacteria produce endospores for both reproduction and survival.Stains
A.
B.
88.  (Ex. 7, 8, 9): Look at the three photomicrographs above. Which one of the following micrographs represents a sample stained using the Endospore stain?
A.
B.
C.
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