Answers. Best Answer: Over 3 and a half hours. When Scout, Jem and Dill returned from supper the Reverend told them the jury had already been gone 30 minutes. Then the clock struck 8 times (8pm). Scout said they sat there until the clock struck eleven times (11pm), and the jury returned soon after that. So the rough estimation is over 3 and a half hours.
Mitochondria produce energy through the process of cellular respiration. Respiration is another word for breathing. The mitochondria take food molecules in the form of carbohydrates and combine them with oxygen to produce the ATP. They use proteins called enzymes to produce the correct chemical reaction.
THE DISCOVERY OF RIBOZYMES. The central role for many proteins in a cell is to catalyze chemical reactions that are essential for the cell's survival. These proteins are known as enzymes. Until relatively recently, it was thought that proteins were the only biological molecules capable of catalysis.