Enzymes In Digestion

Question 1

Lipids

Answer 1

Lipases digest lipids
-forms fatty acids (low pH) and glycerol
-found in the pancreas and small intestine

Question 2

Carbohydrates

Answer 2

Amylase digests carbohydrates
-forms smaller sugars (maltose)
-found in the pancreas, small intestine and salivary glands

Question 3

Protein

Answer 3

Proteases digest protein (eg. Pepsin in stomach pH 2)
-forms amino acids
-found in pancreas, small intestine and stomach

Question 4

Core practical- pH on amylase

Answer 4

-Mix starch solution with amylase.
-Test different pH values using pH buffers.
-To test for starch add 2 drops of iodine and if starch is still present the solution will go blue-black. -Repeat with different pH buffers and make sure to use the same concentration and volume amylase starch solution.
-The pH that has no more starch present in the shortest time produces glucose in the shortest time and so is closest to the optimum.