Your teacher gives you an unknown bacterium to observe. Select the method that would help you determine whether the bacterium is a chemotroph.(1 point)

Question

Responses

growing the bacterium in a sulfur solution to see if it breaks the inorganic molecules down
growing the bacterium in a sulfur solution to see if it breaks the inorganic molecules down

exposing the bacterium to carbon dioxide to see if it fixes carbon
exposing the bacterium to carbon dioxide to see if it fixes carbon

exposing the bacterium to direct sunlight to see if it converts light to chemical energy
exposing the bacterium to direct sunlight to see if it converts light to chemical energy

growing the bacterium in an agar tube filled with protein to see if it breaks the organic molecules down
growing the bacterium in an agar tube filled with protein to see if it breaks the organic molecules down
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Answer 1

To determine whether the bacterium is a chemotroph, you would want to focus on its ability to obtain energy from chemical compounds rather than from sunlight (which would indicate it is a phototroph).

The most appropriate method from your options would be:

growing the bacterium in a sulfur solution to see if it breaks the inorganic molecules down.

This method would help assess whether the bacterium can utilize inorganic molecules (like sulfur compounds) for energy, which is characteristic of chemotrophic organisms.