Cultures of a bacterial species were incubated on the shelf of a refrigerator (5^oC),out on a lab bench top (22^oC),on the shelf of a 37^$\circ$ C incubator,and on the shelf of a 50^$\circ$C incubator.After incubation,there was no growth at 37^$\circ$ C and 50^$\circ$ C,slight growth in the refrigerator,and abundant growth on the lab bench top.What term could be used for this species?

Question

Quizplus · Accepted Answer

The bacterial species was able to grow at low temperatures (refrigerator temperature) and exhibited abundant growth at room temperature (lab bench top). This indicates that it is adapted to grow at lower temperatures and is able to tolerate refrigeration temperatures, which makes it a psychrotroph. The lack of growth at higher temperatures (37°C and 50°C) rules out mesophiles and thermophiles. The information provided does not suggest an anaerobic or capnophilic nature, so options A and E can be ruled out.

Cultures of a Bacterial Species Were Incubated on the Shelf ∘\circ∘

Cultures of a Bacterial Species Were Incubated on the Shelf $\circ$