Multiple choice

Stomach enzymes acts upon

  1. carbohydrates only.

  2. proteins only.

  3. fats only.

  4. cellulose.
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Chyme undergoes chemical changes initiated by gastric juices secreted by the walls of the stomach. These juices include mucus for lubricating the stomach, hydrochloric acid and gastric juice. The enzyme or active principle of the gastric juice is pepsin. This enzyme in combination with hydrochloric acid starts the breakdown of proteins into absorbable amino acids called polypeptides. The gastric juice has no effect upon starches or fats.  

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