Because chewing begins the breakdown of food before it is swallowed, digestion starts in the mouth and throat. which of the following systems aids most in this early stage of digestion?

1.the evidene of the reaction

2.yes

3.yes

1. is geographic distribution

2 is increasing complexity

3 is transitional forms

answer: the correct option is d. enzyme

lactase and carbonic anhydrase are the examples of enzymes.

lactase is an enzyme, which is present in the small intestine of mammals. it in the digestion of the disaccharide, lactose ( milk sugar) by converting it into two monosachharide, which are glucose and galactose.

carbonic anhydrase is present in the red blood cells. this enzyme plays significant role in the transport of co₂. it in the conversion of co₂ and h₂o into carbonic acid, which is then dissociated into bicarbonate ions and hydrogen ions.

a. 35°c

b. 25°c

c. 10°c

d. 40°c