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Bio205 Chapter 7 D Test

Enter the letter for the matching Answer
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1.
A screenlike material that removes particles larger than 0.3um from air
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2.
A method of treating food with high temperatures 140-150C for very short times to make the food sterile so that it can be stored at room temperature
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3.
The temperature required to kill all the bacteria in a liquid culture in 10 minutes
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4.
Electromagnetic radiation
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5.
The absence of contamination by unwanted organisms
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6.
Heat resistant
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7.
A substance capable of killing microorganisms
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8.
The time (in minutes) required to kill 90% of a bacterial population at a given temperature; also called D value
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9.
The length of time required to kill all bacteria in a liquid culture at a given temperature
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10.
A method of determining the effectiveness of a disinfectant using serial dilutions
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11.
The presence of a toxin or pathogenic organism in blood and tissue
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12.
High-energy radiation with a wavelength less than 1nm; causes ionization. Xrays and gamma rays are examples
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13.
Pasteurizing at 72C for 15 seconds
A.
Ionizing Radiation
B.
Asepsis
C.
Use-Dilution Test
D.
High-Efficiency Particulate Air (HEPA) Filters
E.
Microwaves
F.
Biocide/Germicide
G.
Thermal Death Point
H.
Ultra-High Temperature
I.
Sepsis
J.
High Temperature Short-Time pasteurization
K.
Thermoduric
L.
Thermal Death Time
M.
Decimal Reduction Time
Type the Answer that corresponds to the displayed Question.
incorrect
14.
Different methods that have the same effect on controlling microbial growth
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15.
The process of mild heating to kill particular spoilage microorganisms or pathogens
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16.
A treatment capable of inhibitingn bacterial growth
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17.
Short-wavelength radiation that does not cause ionization (UV)
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18.
An agar-diffusion test to determine microbial ssceptibility to chemotherapeutic agets; also called Kirby-Bauer
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19.
The process of sterilizing an inoculating loop by holding it in an open flame
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20.
Equipment for steralization by steam under pressure, usually operated at 15psi and 121C
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21.
Sterilization by the use of an oven at 170C for approx. 2 hours
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22.
A screenlike material with pores small enough to retain microorganism; a 0.45um filter retains most bacteria
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23.
The removal of water

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