An amoeba uses a sugar molecule during metabolic activity. It loses energy to the environment as a result. The transformation of energy from the sugar molecule to environmental energy can be described as a transformation between which of these?

a. electrical energy to radiant energy

b. chemical energy to thermal energy

c. electrical energy to chemical energy

d. chemical energy to electromagnetic energy

Option B, chemical energy to thermal energy

Explanation:

All living organism feed on food that contains energy in the form of chemical energy. Once the food is intake and processed for fulfilling energy requirement of all metabolic processes with in a cell, the remaining energy is released as heat (thermal energy). Thus, an amoeba while consuming a sugar molecule converts chemical energy with in the sugar to thermal energy in the form of energy molecules.

Hence, option B is correct