Pepsin is produced in the stomach and breaks some of the peptide bonds in polypeptide chains.
Cells<span> need a source of </span>energy<span>, they </span>get<span> this </span>energy<span> by breaking down food molecules to release, the stored chemical </span>energy.This process is called 'cellular<span>respiration'. The process is happens in all the </span>cells<span> in our body. Oxygen is used to oxidize food, main oxidized food is sugar(glucose).</span>
I believe they are the quadecipes because they are under the knee and the thigh is under the knee
