The energy currency of the cell is called ___________?
Correct answer: A. ATP
- A. ATP
- B. DNA
- C. RNA
- D. ADP
Explanation
ATP is called the cell's energy currency because energy released from cellular reactions is temporarily stored in its phosphate bonds and transferred when ATP is hydrolysed to ADP. ADP is the likely distractor because it is closely related to ATP, but it contains one fewer phosphate group and stores less readily usable energy.
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About Cellular Respiration
Cellular respiration releases energy from glucose through glycolysis, the link reaction, the Krebs cycle and the electron transport chain, producing ATP. The pathway differs in oxygen availability: aerobic respiration uses oxygen and yields more ATP, while anaerobic respiration produces much less ATP and forms lactic acid in muscles or ethanol and carbon dioxide in yeast.
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