All organisms in the process of life expend energy. Explain where they get it from?

Energy is produced in the form of ATP in the mitochondria of cells. This is called the Krebs cycle or the tricarboxylic acid cycle. ATP is used in all vital processes of the cell: respiration, movement, metabolism.

One of the components of a person's success in our time is receiving modern high-quality education, mastering the knowledge, skills and abilities necessary for life in society. A person today needs to study almost all his life, mastering everything new and new, acquiring the necessary professional qualities.