Digestion

Question 1

what are 4 reducing sugars

Answer 1

lactose, fructose, glucose and galactose

Question 2

what is pepsin

Answer 2

an endopeptidase found in the stomach

Question 3

what do endopeptidase enzymes do

Answer 3

hydrolysed the peptide bonds of non terminal amino acids so they are unable to break down proteins into monomers as the terminal end cannot be broken

Question 4

what are exopeptidase enzymes

Answer 4

enzymes that hydrolyse peptide bonds from end pieces of terminal amino acids and so can break down proteins into monomers

Question 5

what do dipeptidases do

Answer 5

they hydrolyse the peptide bond between the two amino acids in a dipeptide which are then secreted into the small intestine by the enterocytes

Question 6

what are membrane bound disaccharidases synthesised by

Answer 6

by the mucous membranes that lines the small intestine

Question 7

carbohydrases hydrolyse….

Answer 7

carbohydrates to monosaccharides

Question 8

lipases hydrolyse…

Answer 8

lipids into glycerols and fatty acids

Question 9

proteases hydrolyse…

Answer 9

proteins into amino acids

Question 10

what does amylase hydrolyse specifically

Answer 10

the alternate glycosidic bonds of the starch molecule to produce maltose which is then hydrolysed into alpha glucose by maltase (disaccharidase)

Question 11

what is emulsification

Answer 11

when lipids are split up into micelles by bile salts which increases surface area of lipids so the rate of lipases is sped up