Examlex
What important contribution did Heraclides of Pontus make to the field of astronomy in the fourth century b.c.e.?
Phosphate Group
A chemical group consisting of a phosphorus atom bound to four oxygen atoms, important in energy transfer and molecular structure in biological systems.
Hydrocarbon Side
Refers to the nonpolar, hydrophobic part of a molecule that consists of just hydrogen and carbon, commonly found in organic compounds and influencing their chemical behavior.
Photosynthesis
The process by which green plants and some other organisms use sunlight to synthesize foods from carbon dioxide and water, producing oxygen as a byproduct.
Chlorophyll
A group of light-trapping green pigments found in most photosynthetic organisms.
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