Digestion and absorbtion

Question 1

why is digestion important ?

Answer 1

so large molecules can be broken down into smaller molecules and absorbed into the gut

Question 2

what reaction breaks molecules down ?

Answer 2

hydrolysis

Question 2

how does a hydrolysis reaction break down a molecule ?

Answer 2

adds 1 water molecule for each bond

Question 3

what enzymes break down carbohydrates ?

Answer 3

membrane bound diassacharide and amylase

Question 4

what does amylase catalyse ?

Answer 4

the breakdown of starch

Question 5

what is starch

Answer 5

long chains of 2 alpha glucose molecules

Question 6

how does amylase break down starch ?

Answer 6

Amylase works by catalysing
hydrolysis reactions that break the glycosidic bonds in starch to produce maltose (a disaccharide)

Question 7

where is amylase produces and released?

Answer 7

Amylase is produced by the salivary glands, which release amylase into the mouth, and also by the pancreas,
which releases amylase into the small intestine

Question 8

what are membrane bound diassaccharides ?

Answer 8

enzymes that are attached to the cell membranes of epithelial cells lining the ileum.They break down diassaccharides into monosaccharides , using hydrolysis reactions to break glyscosidic bonds

Question 9

what does sucrose break down into ?

Answer 9

monosaccharides glucose and fructose.