An organism that uses organic molecules as carbon sources and obtains energy by oxidizing inorganic molecules is a(n)
(a)-chemoheterotroph
(b)-photoheterotroph
(c)-photoautotroph
(d)-chemoautotroph

(d) - Chemoautotroph

Explanation:

Chemoautotrophs -

Autotrophs are the organism , that can prepare food by their own .

And ,

Chemoautotrophs are the organisms , that uses , inorganic molecules like carbon as their source , to generate energy via oxidizing the inorganic molecules .

The inorganic source of energy can be , ammonia , hydrogen , hydrogen sulfide .

Hence ,

The correct term for the given statement is (d) - Chemoautotroph .

The answer is Choice C

Explanation:

Band X is at the bottom of the gel box or ladder so it is the smallest and the smallest fragments travel the fastest.