1 Pepsin is the main gastric enzyme. 2  It is produced by the stomach cells called chief cells in its inactive form pepsinogen, which is a zymogen. 3  Pepsinogen is then activated by the stomach acid into its active form, pepsin.igestive enzymes are enzymes that break down polymeric macromolecules into their smaller building blocks, in order to facilitate their absorption by the body.
Search form. Trending. The 10 best arcade games of ALL TIME. If you were alive and had access to coins at any time between the 1970s and the mid-1990s, chances are you'll have spent a bit of time in a video arcade, hammering buttons, frantically waggling a sweaty joystick and pumping a week's worth of pocket money into Wonder Boy.
Driving arcade games tend to be on the higher end of the price range noted above. A game such as Dirty Drivinâ can retail for $7,000 to $9,000, while NASCAR Team Racing can be near the $6,500 mark. Higher tech touchscreen arcade games can retail for $2,500 to $5,000. These newer types of arcade games will usually sit on a table top and barely take up space like the older machines. GiantBoards.com claims that you should plan on spending anywhere from $1,000 to $3,000 for a good arcade machine.