A bacterial culture initially contains 1,000,000 (10⁶) CFU. After 6 minutes of heat treatment at 80°C, the bacterial count decreases to 1,000 (10³) CFU. Calculate the decimal reduction time (D-value) at 80°C.

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#Question id: 15173

#XL - S Microbiology

Microbes such as Chlorobium and Chromatium develop as visible green and purple zones. These microorganisms use

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#Question id: 15174

#XL - S Microbiology

Pyrococcus abyssi and Pyrodictium occultum are hyperthermophiles found in hot areas of the seafloor. They usually do not grow well

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#Question id: 15175

#XL - S Microbiology

The cell membranes of psychrophilic microorganisms have high levels of _______ and remain semifluid when cold.

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#Question id: 15177

#XL - S Microbiology

Several mechanisms in alkalophiles for the maintenance of a neutral cytoplasmic pH have been proposed. The plasma membrane may be

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#Question id: 15178

#XL - S Microbiology

What does Salmonella typhimurium and E. coli synthesize as part of their acidic tolerance response.

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#Question id: 15179

#XL - S Microbiology

Escherichia coli, Neisseria gonorrhoeae, Trichomonas vaginalis bacterias are examples of