Question

Cultures of a bacterial species were incubated on the shelf of a refrigerator, out on a lab bench top. on the shelf of a 37" C incubator, and on the shelf of a 50" C incubator. After incubation, there was no growth at 37°C and SO. C, very little growth out on the bench top, and abundant growth at refrigeration. What tem could be used for this species?
A. Halophile
B. Mesophile
C. Anaerobe
D. Psychrophile
E. Thermophile

Answer 1

Answer:

D. Psychrophile

Explanation:

A psychrophile refers to the microorganism that can grow well at 0°C. These microbes have an optimum growth temperature of 15°C or lower. They can tolerate a temperature maximum of around 20°C but show inhibition of growth above that temperature. Some of the examples of psychrophile are Bacillus psychrophilus, Chlamydomonas nivalis. Psychrophiles are naturally found in Arctic and Antarctic habitats. According to the given information, the culture of the bacterial species was able to grow well at refrigeration and therefore, they are psychrophile.