practical unit 5

Question 1

substrate, enzyme, and product used in this unit

Answer 1

substrate: starch

enzyme: amylase

product: maltose

Question 2

what function do monosaccharides play in the cell?

Answer 2

function as the initial substrate for cell respiration

Question 3

what is the bond that forms between carbohydrate monomers?

Answer 3

covalent bond- glycosidic linkage

Question 4

what do cells need to do to starch to use it of or energy?

Answer 4

cells need to break down starch into glucose

Question 5

explain the effect of amylase on starch

Answer 5

amylase breaks down starch

Question 6

what are the 2 different ways to detect amylase activity?

Answer 6

decrease in amount of substrate/starch is detected by iodine

increase in amount of substrate/starch is detected by DNS

Question 7

what color does iodine turn in the presence of starch?

Answer 7

blue/black

Question 8

what color does the DNS reagent turn in the presence of maltose?

Answer 8

dark amber/brown

Question 9

what must happen to DNS before it can be observed?

Answer 9

it must be heated