Final answer:
Cellular respiration can release energy and store it as ATP. It is a multi-stage process where glucose is metabolized in the presence of oxygen, producing energy in a form cells can use for various functions. This process also demonstrates the cyclical nature of matter and energy in biological systems.Option 1 is the correct answer.
Step-by-step explanation:
Cellular respiration can release energy from glucose and store it in the form of ATP (adenosine triphosphate). During this process, energy is first harnessed from the glucose molecule and then transferred to ATP. ATP serves as the main energy currency within a cell, and it provides the power needed for various cellular activities. The formation of ATP from glucose occurs in several stages, including glycolysis, the Krebs cycle, and the electron transport chain.
During glycolysis, glucose is split into two three-carbon molecules, and some energy is captured and stored in ATP and NADH. In the Krebs cycle and the electron transport chain, further oxidation occurs, and a significant amount of ATP is produced. This is why cellular respiration is often described as a controlled release of energy, used to perform cellular work such as movement, synthesis of molecules, and active transport.
All living organisms rely on the process of cellular respiration to obtain the energy needed for life's processes. This energy originally comes from the sun and is stored in the bonds of glucose molecules through photosynthesis. By using oxygen to metabolize these carbohydrates, cellular respiration releases energy, transitions it into a usable form (ATP), and produces byproducts such as carbon dioxide and water that are then utilized in other biological cycles.