Dietary Fibre：练习题

• a.

  Wholemeal bread

• b.

  Chicken breast

• c.

  White sugar

• d.

  Skimmed milk

• a.

  It stimulates the pancreas to secrete digestive proteases to break down excess sugars.

• b.

  It dissolves in water to form a viscous gel that slows gastric emptying and the intestinal absorption of glucose.

• c.

  It speeds up peristalsis rapidly so carbohydrates pass unabsorbed through the small intestine.

• d.

  It directly breaks down circulating glucose into glycogen within the intestinal lumen.

• a.It neutralizes the effect of simple sugars in the small intestine.
• b.It increases the production of insulin in the pancreas.
• c.It slows down the digestion and absorption of glucose into the bloodstream.
• d.It provides the body with a slow-releasing source of complex starch.

• a.

  Acting as a primary catalyst for enzymatic reactions

• b.

  Adding bulk to faeces and stimulating peristalsis to prevent constipation

• c.

  Repairing damaged muscle tissues in the gut

• d.

  Providing a concentrated source of long-term energy

• a.

  It acts as a chemical catalyst to speed up the digestion of high biological value (HBV) proteins.

• b.

  It binds with fat-soluble vitamins to assist their absorption into the bloodstream.

• c.

  It is broken down into glucose by digestive enzymes to provide a quick source of energy.

• d.

  It absorbs water and adds bulk to the faeces, which stimulates peristalsis to move waste through the digestive tract.

先自己写一遍答案，再对照解题步骤。

先自己写一遍答案，再对照解题步骤。