lipids

Question 1

uses of lipids

Answer 1

energy storage
insulation
bouyancy
protection

Question 2

what is the structure of a triglyceride

Answer 2

1 glycerol
3 fatty acid chains

Question 3

how is a triglyceride formed

Answer 3

ester bonds are formed between the hyrodxyl group of the glycerol and the carboxyl group of the fatty acid
condensation reaction

Question 4

what type of bond is formed between fatty acids and glycerol

Answer 4

ester bonds in a condensation reaction

Question 5

what is an unsaturated faat

Answer 5

has a double bond

Question 6

what is a saturated fat

Answer 6

single bond

Question 7

why are saturated fats not as good for you

Answer 7

hydrogen bonds between fatty acids due to the single bond
harder to break down
remains a solid
results in a build up of fat

Question 8

what is a phospholipid

Answer 8

glycerol joined with an inorganic phosphate group and 2x fatty acid chains

Question 9

what is a phospholipid bilayer

Answer 9

two layers of phospholipids
on the outside is hydrophillic phosphate tail
in the inside is the hydrophobic fatty acids

Question 10

what is a micelle

Answer 10

a small sphere of phospholipids

Question 11

describe how a triglyceride molecule is formed

Answer 11

one glycerol and three fatty acids chains form a triglyceride in a condensation reaction to form three ester bonds and removes three water molecules