Exp 3

Question 1

proteins are hydrophilic or hydrophobic?

Answer 1

some proteins have polar r chains and others have non polar (hydrophobic chains)

Question 2

is cholesterol hydrophilic or hydrophobic?

Answer 2

it is amphipathic, contains both hydrophilic and hydrophobic parts

Question 3

calculating percent yolk and whites

Answer 3

finding mass of yolk and whites requires subtracting from the beaker + thing - beaker
finding total is adding up yolk 1 and 2, and white 1 and 2

percentage is total yolk/white mass/ egg mass x 100%

Question 4

adding acetic anhydride and sufuric acid is a test for

Answer 4

cholesterol (turns blue)

Question 5

adding copper sulphate and sodium hydroxide is a test for what

Answer 5

protein, turns purple

Question 6

adding iodine is a test for

Answer 6

triglygerices (turns dark blue)

Question 7

which has the most amount of protein

Answer 7

the egg white since it has the darkest purple colour with the cup-or sulphate and sodium hydroxide

Question 8

most unsaturated triglycerides and polar lipids

Answer 8

egg yolk solid most brown with iodine

The order of most brown was 3 (yolk solid) then 1 (yolk liquid) then 2 (white liquid) then 4 (white solid)

Question 9

most cholesterol

Answer 9

egg yolk, it was the darkest blue

Question 10

egg is mostly

Answer 10

white