10 Questions
What physical agents are typically required to kill spores and thermophiles?
High pressure and high temperature
At what temperatures are refrigeration temperatures typically maintained for food preservation?
4 to 8°C
Which of the following physical agents is used only for surface sterilization?
Ultraviolet light
What do ethanol, iodine, and chlorine have in common as commercial disinfectants?
They damage proteins, lipids, and/or DNA
What is the primary purpose of using gamma rays, electron beams, and X-rays in irradiation?
High penetrating power
Why are refrigeration temperatures commonly used for food preservation?
To slow growth and preserve strains
'Low temperatures slow growth and preserve strains' - which microbial agent does this statement refer to?
Cold
'Gamma rays, electron beams, and X-rays have high penetrating power' - what is the significant feature of these agents mentioned?
'High penetrating power'
'Refrigeration temperatures are used for food preservation' - what is the primary role of refrigeration temperatures in food storage?
'Slow growth and preserve strains'
'Ethanol, iodine, and chlorine damage proteins, lipids, and/or DNA' - how do these substances function as disinfectants?
'Damage microbial components'
This quiz covers the concept of osmolarity as a measure of solute molecules in a solution and its impact on cells through hypertonic, isotonic, and hypotonic solutions. Test your knowledge on how solute concentration can affect cells' water balance and overall function.
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