In ecosystems, plants transform light energy from the Sun into chemical energy when they make sugar. This sugar can then be cons
umed by other organisms to be used as building blocks for other molecules, such as proteins and fats, or it can be transformed into other forms of energy, such as kinetic energy, when the organism moves.
Glucose that is consumed is used to make energy in the form of ATP, which is used to perform work and power chemical reactions in the cell. During photosynthesis, plants convert light energy into chemical energy that is used to build molecules of glucose.
