Exam 1 - digestion

Question 1

What digestion occurs in the mouth?

Answer 1

salivary amylase breaks down a-1,4 bonds of amylose and amylopectin to form dextrins

Question 2

Stomach digestion

Answer 2

HCl denatures the a-amylase, no no CHO breakdown occurs here

Question 3

Duodenum digestion

Answer 3

pancreative amylase breaks down a-1,4 bonds of amylose and amylopectin producing:
- maltose
- isomaltose
- maltotriose
- limit dextrins

Question 4

Epithelium of small intestine digestion

Answer 4

• where majority of digestion occurs, happens at the brush border (brush border enzymes)

Question 5

Brush border enzymes

Answer 5

1. Lactose broken down by lactase into glucose + galactose
2. Sucrose broken down by sucrase into glucose + fructose
3. Maltose broken down by maltase into glucose+glucose
4. Isomaltose broken down by isomaltase into glucose+glucose