biological molecules

Question 1

test for starch

Answer 1

starch is placed on spotting tile
a drop of yellow brow iodine is added
will change blue black in presence of starch

Question 2

test for glucose

Answer 2

glucose and distilled water
benedicts’ sol added(few drops)
water bath and boil
blue will change to brick red

Question 3

test for protein

Answer 3

biurets solution
protein and distilled water
pale purple

Question 4

test for lipid

Answer 4

pipette used to add one drop of oil
ethanol
water
white layer forms

Question 5

adv of immobilized enzymes

Answer 5

stable at high temp
more resistant to changes in PH
products uncontaminated by enzyme
enzyme can be kept and re used

Question 6

what enzyme breaks down sucrose in to monosaccarides

Answer 6

invertase