What type of biological molecule is chlorophyll?

Chlorophyll is classified as a pigment because it plays a crucial role in the process of photosynthesis by absorbing light energy, primarily in the blue and red wavelengths. This light energy is then used to convert carbon dioxide and water into glucose and oxygen, which are vital for plant growth and energy production.

Pigments, like chlorophyll, are typically organic compounds that reflect certain wavelengths of light while absorbing others. In the case of chlorophyll, its green color is due to the wavelengths of light it reflects. Understanding chlorophyll as a pigment highlights its specific function and importance in the biological processes of plants, particularly in harnessing solar energy. This distinction is key when differentiating between various types of biological molecules, like proteins, lipids, and carbohydrates, which have different structures and roles in biological systems.