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does anybody knows? i need it for my extended essay pleaseee

2007-06-02 14:55:26 · 4 answers · asked by Anonymous in Science & Mathematics Biology

4 answers

There are cells in the stomach which make hydrochloric acid (HCl) and others that make pepsinogen, an inactive enzyme. The HCl acts on proteins to denature them (uncurling them from the 3-dimensional structures they form). The HCl also acts on pepsinogen (which is a protein), making it into pepsin, the active form of the enzyme, that breaks peptide bonds that hold the amino acids that form proteins together. Pepsin is one of the few enzymes that is not denatured, and can function at very how pH (like that in the stomach). Contractions of the smooth muscle in the wall of the stomach mix the contents together with the HCl and pepsin, making a mixture called acid chyme.

2007-06-02 15:35:49 · answer #1 · answered by kt 7 · 0 0

Stomach acid is a 0.10 M HCl solution. It means that there are .1M (mol) of HCl in every liter of digestive juices.

2007-06-02 22:42:04 · answer #2 · answered by Pinky 5 · 0 0

hydrochloric acid in the stomach

2007-06-02 22:01:20 · answer #3 · answered by drochem 5 · 0 0

HCL (hydrocloric acid)

2007-06-02 21:57:51 · answer #4 · answered by Anonymous · 0 0

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