B2- More on Enzymes and Digestion

• What is the role of enzymes in the digestive system?


  They catalyse the breakdown of food.
• Where are enzymes used in the digestive system produced?

  They are produced by specialised cells in glands and in the gut.
• What type of enzyme is produced by the salivary glands?

  Amylase enzyme.
• What is the function of bile in the digestive system?

  Bile neutralises stomach acid and aids in digestion.
• What is the primary function of the stomach?

  To pummel food with muscular walls and produce digestive enzymes.
• What enzyme does the stomach produce and what is its purpose?

  The stomach produces pepsin, a protease enzyme, to digest proteins.
• Why does the stomach produce hydrochloric acid?

  To kill bacteria and provide the right pH for the protease enzyme.
• Where is bile stored before being released into the small intestine?

  In the gall bladder.
• What happens in the large intestine?

  Excess water is absorbed from the food.
• What is the function of the rectum in the digestive system?

  It stores feces before they are expelled from the body.
• What does the pancreas produce for digestion?

  It produces protease, amylase, and lipase enzymes.
• What occurs in the small intestine regarding digestion?

  Protease, amylase, and lipase enzymes complete digestion and absorb digested food into the blood.
• What is the significance of the digestive system being a continuous hole through the body?


  It allows for the passage of food, digestive juices, and enzymes through the body.
• What is the function of the salivary glands?

  produces amylase enzyme in the saliva
• What is the function of the liver?

  where bile is produced
• What does the bile do?

  neutralises stomach acid and emulsifies fats
• What is the function of the gall bladder?

  where bile is stored before its released into the small intestine
• What is the function of the large intestine?

  excess water is absorbed from the food
• What is the function of the stomach?

  • pummels food with its muscular walls
  • produces the protease enzyme- pepsin
  • produces hydrochloric acid
• Why does the stomach produce hydrochloric acid?

  • to kill bacteria
  • give the right PH for the protease enzyme to work
• What is the function of the pancreas?

  Produces protease, amylase and lipase which get released into the small intestine
• What is the function of the small intestine?

  • produces protease, amylase and lipase enzymes to complete digestion
  • this is also where digested food is absorbed out of the digestive system into the blood
• What is the function of the rectum?

  where the faeces are stored before they go through the anus