ATP (adenosine triphosphate) plays a critical role in cell metabolism as the primary energy currency of the cell. It serves as an immediate source of energy for cellular processes, such as muscle contraction, active transport of ions across cell membranes, and synthesis of macromolecules. ATP is produced through cellular respiration and is broken down into ADP (adenosine diphosphate) and inorganic phosphate to release energy for cellular work.
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It has selective permeability (allows it to control what comes in and out of the cell) and it isolates the cytoplasm.
Carbon is a non metal element. Atomic number of it is 6.
Maybe only shiver because they are cold and need warmth. They probably are just getting old and shiver because they have no control. If you have a grandma or grandpa at home who is shivering, sit he/she down with a cup of hot cocoa and a blanket.
The metabolism of carbohydrates, fatty acids, amino acids, and alcohol produces the same molecule for energy: ATP (adenosine triphoshate).
Simply put, the waste products of celluar respiration are CO2 and water. We exhale the CO2 and some of the water, and other excess water is filtered into the urine by the kidneys.