Final answer:
The waste product of plants used in the leather tanning process is tannin. The pancreas secretes enzymes including lipase, trypsin, and amylase for the digestion of fats, proteins, and carbohydrates, respectively. The pancreas also neutralizes stomach acid with bicarbonate.
Step-by-step explanation:
The waste product of plants used in the conversion of hide to leather is tannin. Tannin is used in the tanning process to make the hides less susceptible to decay and to impart certain qualities to the leather, such as greater resistance to water.
The pancreas secretes enzymes for the digestion of fats, proteins, and carbohydrates. Three important pancreatic enzymes include:
- Lipase, which digests triglycerides (lipids, or fats, consisting of three fatty acid chains attached to a glycerol backbone).
- Trypsin, which digests protein; this enzyme is secreted as trypsinogen (a proenzyme) and is then activated in the intestines.
- Amylase, which breaks down carbohydrates.
Additionally, the pancreas helps neutralize stomach acid entering the duodenum by secreting bicarbonate. This allows the enzymes to function optimally in a less acidic environment.