A heterotroph is an organism that derives it's energy from

Options

A. light
B. inorganic molecules
C. heat
D. organic molecules

Answer

### Step-by-Step Text Solution:

1. **Understanding Heterotrophs**: Begin by defining what a heterotroph is. Heterotrophs are organisms that cannot synthesize their own food and must rely on other organisms for nutrition.

2. **Energy Source**: Identify the primary source of energy for heterotrophs. They derive their energy from organic molecules, which are compounds that contain carbon and are typically produced by other living organisms.

3. **Comparison with Autotrophs**: Differentiate heterotrophs from autotrophs. Autotrophs, such as plants, can produce their own food using light energy (photosynthesis) or inorganic molecules (chemosynthesis). In contrast, heterotrophs depend on consuming organic matter.

4. **Examples of Heterotrophs**: Provide examples of heterotrophic organisms, such as animals, fungi, and some bacteria, which obtain their energy by consuming plants or other animals.

5. **Conclusion**: Conclude that the correct answer to the question is that a heterotroph derives its energy from organic molecules.