stomach acid unfolds proteins, exposing them to digestive enzyme.
举一反三
- Which substance is produced by endocrine glands: A: saliva B: milk C: stomach acid and digestive enzymes D: insulin
- Milk always meets in the stomach a digestive juice
- All cells have a cell membrane made of proteins and ( ). A: lipids B: glucose C: amino acid D: fructose
- Human BRCA1 and BRCA2 are large proteins (1,834 and 3,418 amino acid residues, respectively) that interact with a wide range of other proteins involved in transcription, chromosome maintenance, DNA repair, and control of the cell cycle.
- 下列物质中，（）属于微生物的次级代谢产物。 A: enzyme B: vitamin C: toxin D: Amino acid