Question

chemical digestion _________.
occurs through the process known as peristalsis
occurs when enzymes break apart large molecules into smaller molecules
occurs in the small intestine with the process known as segmentation
begins in the mouth with the process known as mastication
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part b
food that has been moistened with saliva and then swallowed through the esophagus is called _________.
pepsin
a bolus
an epiglottis
chyme
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Explanation:

For Part A, chemical digestion involves enzymes breaking down large molecules into smaller ones. Peristalsis is a muscular - movement process, segmentation is a mixing movement in the small intestine, and mastication is mechanical digestion in the mouth. For Part B, food moistened with saliva and swallowed is called a bolus. Pepsin is an enzyme, the epiglottis is a flap of tissue, and chyme is the semi - fluid mass in the stomach.

Answer:

Part A: occurs when enzymes break apart large molecules into smaller molecules
Part B: a bolus