Energy is stored long-term in the bonds of _ and used short-term to perform work from a(n) _ molecule. a. ATP: glucose b. an anabolic molecule : catabolic molecule c. glucose : ATP d. a catabolic molecule : anabolic molecule
The Correct Answer and Explanation is:
The correct answer is: c. glucose : ATP
Explanation:
Energy in biological systems is primarily stored in the chemical bonds of molecules, which can later be used for various metabolic processes. Glucose and ATP are central players in energy storage and utilization.
- Glucose is a key energy source in cells, particularly during processes like cellular respiration. The bonds in glucose molecules store significant amounts of energy. When glucose is broken down (via processes like glycolysis and the citric acid cycle), this stored energy is released.
- ATP (Adenosine Triphosphate) is the primary energy carrier in cells. It acts like a rechargeable battery that stores energy temporarily in its high-energy phosphate bonds. When ATP breaks down into ADP (Adenosine Diphosphate) and inorganic phosphate (Pi), energy is released to perform cellular work, such as muscle contraction, protein synthesis, or active transport across membranes.
Why c. glucose : ATP is correct:
- Glucose is stored long-term as an energy reservoir. Through metabolic processes, it is broken down to produce ATP, which can then be used immediately by cells to perform work.
- ATP, being a high-energy molecule, can be readily broken down and provide energy for short-term activities, like muscle contractions or biochemical reactions.
This flow of energy from glucose to ATP is central to cellular metabolism and is essential for maintaining life processes.
