1.

Explain the statement, ‘Bile does not contain any enzyme but it is essential for digestion.’

Answer»

Bile is a digestive juice secreted by the liver. Although it does not contain any digestive enzymes, it plays an important role in the digestion of fats. Fats are present in the form of large globules in intestine which makes it difficult for enzymes to act on them. Bile salts present in bile juice break down fats into smaller globules, (i.e. emulsifies fats) which increases the efficiency of enzyme action. In addition, bile juice also makes the acidic food coming from the stomach alkaline, so that pancreatic enzymes can act on them.



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