digestion
what do digestive enzymes do?
The digestive enzymes catalyse (speed up) the breakdown of large, insoluble food molecules into smaller, soluble (can be dissolved) molecules that are then small enough to be absorbed into the bloodstream.
2
Digested molecules can be used to construct new carbohydrates, proteins and lipids in the body.
3
Some glucose produced by digestion is used for respiration.
what are the 3 digestive enzymes?
amylase
lipase
protease
Why is it necessary to breakdown large, insoluble food molecules into smaller, soluble molecules?
-Large, insoluble food molecules can't be absorbed into the bloodstream.
-Small, soluble molecules can be absorbed into the bloodstream and used to construct new carbohydrates, proteins and lipids in the body.
-Some glucose produced by digestion is used for respiration.
where are amylase produced?
amylase are produced in -
small intestines
pancrease
salivary glands
what is the purpose of amylase?
amylase breaks down starch into its constituent simple sugars (predominantly maltose)
starch -> maltose (+ other sugars)
where is amylase action site ?
the mouth
the small intestines
where is protease produced?
small intestine
pancrease
stomach
where is the action site for protease?
small intestine
stomach
what is the purpose of protease?
break down proteins into amino acuds