Which substance is broken down inside muscle cells to release energy in the form of ATP?

Question

Amino acid
Adrenaline
Fatty acid

Answer 1

In muscle cells, fatty acids are broken down to release energy in the form of ATP. While amino acids can also be used for energy, they are primarily involved in protein synthesis and are generally not the main source of quick energy in muscle cells. Adrenaline is a hormone that can trigger processes to release energy but is not a substance that is broken down for energy directly. Therefore, the correct answer is fatty acid.