State whether the following statements are
true or false. If false, rewrite the correct
form of statements.
1. Saliva changes starch into sugar.
2. Tongue helps in mixing of saliva with food.
3. Bile is produced by gall bladder.
Answers
1. True.
2. True.
3. False.
1) False.
Explanation:-
When foods containing starches are chewed in the mouth, they are mixed with saliva. Saliva contains an enzyme, (amylase) which helps chemically to change starch into small sugar molecules. Starch turns purple when added to iodine but sugar does not.
2) True.
Explanation:-
Digestion starts from the mouth. The salivary gland in the mouth secretes saliva, with the help of tongue saliva mixes with the food when is chewed. The tongue is a muscle with glands, sensory cells, and fatty tissue that helps to moisten food with saliva.
3) True.
Explanation:-
Bile is an alkaline fluid with a pH of about 7.4 and is secreted by the liver, stored in gall bladder and released into the duodenal region of the small intestine. The bile mainly consists of the water, bile pigments, cholesterol and bile salts. Bile salts help in emulsification of fats in the intestine.
"hope this helps!"