Digestion of Proteins Flashcards
Digestion of proteins occurs in four main organs, name these organs
Mouth
Stomach
Pancreas
Small intestine
What happens to proteins in the mouth?
Food is chewed into small pieces by the teeth
What happens to proteins in the stomach?
Gastric juices are secreted which contain hydrochloric acid, rennin and pepsin
What does hydrochloric acid do to proteins in the stomach?
It denatures proteins
What does rennin do to proteins in the stomach?
Caseinogen is broken down into casein
What does pepsin do to proteins in the stomach?
Pepsin breaks proteins down into peptones
What happens to proteins in the pancreas ?
Pancreatic juice is secreted into the duodenum which contains trypsin
What does trypsin do to proteins?
Trypsin breaks down peptones into peptides
What happens to proteins in the small intestine?
The ileum secretes intestinal juice containing peptidase
What does peptidase do to proteins?
Peptidase breaks down peptides into amino acids
What happens to amino acids at the end of digestion?
They are now ready to be absorbed and utilised by the body
What enzymes are involved in the digestion of proteins?
Rennin
Pepsin
Trypsin
Peptidase
Where is rennin found?
The stomach
It is part of gastric juice
Where is pepsin found?
The stomach
It is part of gastric juice
Where is trypsin found?
Pancreatic juice
It is secreted into the duodenum
