ANIMAL PHYSIOLOGY
DIGESTION IN HUMANS
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
Protein digestion begins in the mouth.
|
|
|
Proteins are used for cell growth and repair.
|
|
|
Proteins are broken down to form amino acids.
|
|
|
Some complex proteins function as enzymes in the body.
|
Detailed explanation-1: -Chemical digestion of proteins doesn’t occur until food reaches the stomach because there aren’t any digestive enzymes released in the mouth that break down proteins. The digestive enzymes found in our saliva within the mouth break down carbohydrates and fats, but not proteins.
Detailed explanation-2: -Answer and Explanation: The correct statement about digestion and absorption of proteins is C) small intestine cells break dipeptides and tripeptides into individual amino acids.
Detailed explanation-3: -Protein digestion begins when you first start chewing. There are two enzymes in your saliva called amylase and lipase. They mostly break down carbohydrates and fats. Once a protein source reaches your stomach, hydrochloric acid and enzymes called proteases break it down into smaller chains of amino acids.
Detailed explanation-4: -Mechanical digestion of protein begins in the mouth and continues in the stomach and small intestine. Chemical digestion of protein begins in the stomach and ends in the small intestine. The body recycles amino acids to make more proteins.