BIOMOLECULES AND ENZYMES

Detailed explanation-1: -Notably, each molecule of ATP in the human body will be recycled 2, 000–3, 000 times in a single day. Fig. 1. Energy is freed from ATP by removing one of the phosphate groups yielding ADP.

Detailed explanation-2: -Totally quantity of ATP in an adult is approximately 0.10 mol/L. Approximately 100 to 150 mol/L of ATP are required daily, which means that each ATP molecule is recycled some 1000 to 1500 times per day.

Detailed explanation-3: -Each cell in the human body is estimated to use between 1 and 2 billion ATPs per minute, which comes to roughly 1 × 1023 for a typical human body. In the span of 24 hours, the body’s cells produce about 441 pounds (200 kilograms) of ATP.

Detailed explanation-4: -Every molecule of ATP is actually recycled 1300 times a day! The mitochondrion has ATP synthase which helps phosphorylation of ATP and its transport out of the mitochondrion into the cell.

Detailed explanation-5: -So the average cell in the human body produces ∼107–108 ATP/s, roughly consistent with the estimate of the energetic cost of protein turnover and several orders of magnitude more energy than we estimated that keratocyte motility requires.