Question

the enzyme salivary ____ starts the breakdown of starch to glucose in the mouth of humans.
a pepsin
b peptidase
c sucrase
d amylase
e lipase
question 30
the longest organ of the digestive system is the ____.
a esophagus
b stomach
c small intestine
d colon

Explanation:

For the first question: Salivary amylase is the enzyme in saliva that initiates starch breakdown into glucose. Other options target proteins (pepsin, peptidase), sucrose (sucrase), or fats (lipase). For the second question: The small intestine is the longest digestive organ, longer than the esophagus, stomach, or colon.

Answer:

First question: D. amylase
Second question: C. small intestine