Physical Methods to Control Microbial Growth Practice Problems

Salting and sugaring are methods that can create unfavorable conditions for microbial growth by altering which of the following environmental factors?

Which of the following will not be killed by pasteurization?

Which of the following materials is NOT suitable for sterilization using autoclaving?

Which of the following methods can preserve bacterial cells by removing water and inhibiting microbial growth?

What spoilage organisms are primarily targeted by processing acidic foods at temperatures around 100°C?

Which of the following is NOT a method commonly used for sterilizing packaging materials in aseptic packaging?

The 12D treatment is a sterilization process that targets which of the following microbes?

Which of the following typically produces gamma rays that can be used as ionizing radiation for food preservation?

Hyperbaric oxygen therapy may be effective against facultative anaerobic mesophiles, especially if they are in oxygen-exposed areas, because:

Which of the following statements is true regarding boiling as a strategy to control microbe levels?

Which among these terms refers to the freeze-drying technique commonly used in the pharmaceutical industry?

Which of the following refers to the removal of pathogenic microorganisms from equipment to make it safe for use?

A strain of Pseudomonas aeruginosa has been subjected to heat for an exact duration, leading to the destruction of exactly nine-tenths (9/10) or ninety percent (90%) of the cells from its original population count. What terminology would you use for such an event?

Which organism's endospores are often used as a standard for assessing the efficacy of sterilization processes?

Which of the following household items operates similarly to an autoclave?

The preservation of dried fruits from microbial growth primarily relies on which method of microbial control?

Which form of radiation is frequently employed to disinfect water?

Which of the following is not a physical method of microbial control?

In the heat sterilization process, which term represents the shortest period of time necessary for killing all bacteria at any given specific degree?

Which one among these statements best describes the difference between pasteurization and sterilization?

'Lyophilization' is often preferred over 'desiccation' in preserving pharmaceuticals because:

Why don't hyperthermophiles present a risk when found on sterilized surgical instruments?

Which statement about using ionizing radiation to sterilize foods is false?

Which among these methods would not effectively remove viruses from pond water?

Which among these methods does not involve heat treatment for preserving foods?

Which of the following procedures kills mesophilic bacteria but not endospore formers?

In the process of sterilizing surgical instruments, which microbe is most likely to survive?