Question #31e67

1 Answer
Nov 19, 2017

Digestion of protein.

Explanation:

Let's checkout all the options one by one:

Does saliva act as an antiseptic?
Yes it does. Because it contAins several anti-fungal, anti-bacterial and anti-viral agents. So, option #(D)# properly fits in properties of saliva.

Does saliva help in taste sensation?
Yes. There are receptors sites on taste buds which are stimulated only when food dissolves in salivary water and this develops the sensation of taste. So, option #(C)# also fits in properties of saliva.

Does saliva aid in normal speech?
Yes. Because saliva is 99.5% water. And thus it reduces the friction in our oral cavity helping us to speak. So, option #(B)# is again something done by saliva.

Does saliva digest proteins?
No. Because saliva doesn't contain any kinda protein digesting enzymes. However it do contain carbohydrate digesting enzyme i.e amylase or ptyalin. Eventually, option #(A)# is the one that's not protein's job. So it is the correct one.

Hope it helps...