Respond to the case-based question provided below:
 
How are carbohydrates, proteins and fats broken down and absorbed during digestion in humans? Explain briefly.
Answer variants:
Pepsin and rennin
Begins in the buccal cavity by saliva
Goblet cells
Gastric juice activates proenzymes pepsinogen and prorenin
Provides an alkaline medium
 
a. Digestion of carbohydrates -
 
b. Protein digestion -
 
c. The \(HCl\) acid converts pepsinogen and prorenin into -
 
d. In the small intestine, mucus is secreted by -
 
e. Bile juice -