A microbe recovered from an environmental sample grows on a medium composed of agar and a mix of salts. The agar is not digested during incubation. The growth rate increases in high CO2 conditions. The organism is likely a(n)
A) chemotroph.
B) autotroph.
C) halophile.
D) heterotroph.
E) The answer cannot be determined from the information provided.

Question

Quizplus · Accepted Answer

The organism's growth rate increases in high CO2 conditions, suggesting it uses CO2 as a carbon source, which is characteristic of autotrophs.

A Microbe Recovered from an Environmental Sample Grows on a Medium