Which term is described as the only usable form of energy in the body?

Which term is described as the only usable form of energy in the body?

• A. ATP
• B. Glycolysis
• C. Sarcoplasm
• D. Krebs cycle

Answer: (A)

ATP is the form of energy the body can use directly. Energy stored in foods has to be converted into ATP before it can power anything—muscle contraction, nerve signaling, chemical reactions, and so on. When ATP is broken down to ADP and inorganic phosphate, that release of energy drives these cellular processes. The other terms are not energy themselves: glycolysis and the Krebs cycle are metabolic steps that help generate ATP, while the sarcoplasm is just the fluid inside muscle cells. So the term describing the only usable form of energy in the body is ATP.

ATP is the form of energy the body can use directly. Energy stored in foods has to be converted into ATP before it can power anything—muscle contraction, nerve signaling, chemical reactions, and so on. When ATP is broken down to ADP and inorganic phosphate, that release of energy drives these cellular processes. The other terms are not energy themselves: glycolysis and the Krebs cycle are metabolic steps that help generate ATP, while the sarcoplasm is just the fluid inside muscle cells. So the term describing the only usable form of energy in the body is ATP.