As food passes through the digestive system, it undergoes physical and chemical digestion,

Either one of these works:

1. Polysaccharides are broken down into disaccharides by salivary amylase

2. Chyme is produced when food is broken down into smaller pieces and mixedwith digestive juices

3. Pepsin digests proteins into small polypeptides

4. Trypsin and chymotrypsin act upon polypeptides

OR

1. Polysaccharides are broken down into disaccharides by salivary amylase

2. Pepsin digests proteins into small polypeptides

3. Chyme is produced when food is broken down into smaller pieces and mixed with digestive juices

4. Trypsin and chymotrypsin act upon polypeptides

https://videos.homeworkclinic.com/watch/484/protein-digestion-stomach-small-intestine/

1) Polysaccharides are broken down into disaccharides by salivary amylase.
2) Chyme is produced when food is broken down into smaller pieces and mixed with digestive juices
3) Pepsin digests proteins into small polypeptides
4) Trypsin and chymotrypsin act upon polypeptides