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Digestion and Absorption — BIOLOGY STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 ScienceBIOLOGYDigestion and Absorption2 Marks
Question
  1. As a digestive gland, what does liver secrete and where is this secretion stored? Also name the enzymes secreted by liver.
  2. Digestive secretion of liver contains which salts? What is their function?
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Answer

  1. Liver secretes bile juice. It is stored in gall bladder.Bile secretion contains no enzymes.
  2. Bile contains salts, namely, sodium glycolate and sodium taurocholate. These reduce the surface tension of large fat droplets and break them into many small ones. The process is called emulsification. Bile salts also form a thin coating around tiny fat droplets to keep them free from each other.

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