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Atp
ATP is used as a primary biological source of energy.
Most likely.
glucose and oxygen
NADH (or NAD+) is used to produce ATP, the primary source of muscle energy.
The primary source of chemical energy in animal cells are ATP molecules
The adeylate molecule ATP is the primary source of energy from respiration.
First : From the food intake Second: From the sunlight
Food is the ultimate source of ATP, or adenosine triphosphate. Once ATP is formed, it is used as the main energy source of cells.
The molecule that is the primary source of energy in all cells is ATP, which is definitely not a macromolecule. The molecule that is the primary source of energy in cells for making ATP from ADP is glucose, which is definitely not a macromolecule. Macromolecules that can be metabolized for energy (starches, fatty acids, proteins) are only secondary or tertiary sources of energy as the process of extracting energy from them is slow and inefficient.
Cells store chemical energy in the form of adenosine triphosphate, or ATP.