Digestive enzymes

Question 1

where is amylase made

Answer 1

small intestine , pancreas , salivary glands

Question 1

which enzymes are responsible for breaking down carbohydrate, proteins , lipids

Answer 1

carbohydrases break down carbohydrates into simple sugars but other carbohydrates eg starch are broken by carbohydrase called amylase into simple sugars eg maltose

proteins - are broken down by proteases into amino acids

lipids/fats - broken down by lipases into
glycerol and fatty acid

Question 2

where are proteases made

Answer 2

stomach ( pepsin ), amylase and small intestine

Question 3

where are lipases produced

Answer 3

pancreas , small intestine

Question 4

bile is made in the ———- and stored in the ————

Answer 4

liver, gall bladder

Question 5

how does bile help digestion of lipids

Answer 5

• speeds up rate of digestion of lipds
• bile converts large lipid droplets into smaller lipid droplets -( emulsifies lipids) ( which increases the surface area of the lipid droplets which increases rate of lipid breakdown by lipase )
• bile is an alkaline so neutralises stomach acid = creates alkaline conditions in the small intestine = increases the rate of lipid digestion by lipase

Question 6

a lipid molecule consists of ———– attached to ———- molecules of ——-

Answer 6

one molecule of glycerol and three molecules of fatty acids