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 50°C,very slight growth out on the bench top,and abundant growth at refrigeration.What term could be used for this species?

Question

Quizplus · Accepted Answer

The bacterial species in this scenario can grow at refrigeration temperatures but not at higher temperatures, indicating that it is adapted to cold environments, making it a psychrophile. The lack of growth at 37°C and 50°C eliminates mesophiles and thermophiles. The fact that there was some growth on the bench top suggests that the species is not an obligate aerobe, eliminating capnophiles. There is no information provided about the organism's salt tolerance, so halophiles cannot be assumed. Therefore, the best choice is D: Psychrophile.

Cultures of a Bacterial Species Were Incubated on the Shelf