Listeria monocytogenes is a human pathogen, growing readily in the human body. It poses a problem in food storage because of its ability to grow in refrigerated foods, such as unpasteurized milk or deli meats. An organism that prefers moderate temperatures, such as 25 - 40C but is capable of growth at refrigerator temperatures is known as a:
mesophile
psychrophile
psychrotropha
thermophile
mesotroph
psychrotropha
Biology & Microbiology
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The length of the lag phase of growth can vary depending on
A. the nature of the growth medium. B. the temperature. C. the condition of the microorganisms. D. All of the choices are correct.
Biology & Microbiology
Endocytosis is a type of _______.
a. passive transport b. facilitated diffusion c. osmosis d. active transport
Biology & Microbiology
Haplodiploidy can occur in which animals?
a. fish b. rodents c. spiders d. birds
Biology & Microbiology
Why is perspiration an effective defense against microorganisms?
A) basic pH and low salt content B) basic pH, low salt content, and presence of lysozyme C) low salt content D) presence of lysozyme E) basic pH
Biology & Microbiology