LIPIDS

Question 1

Lipids

Answer 1

contain large of o2 and h2. HOC
insoluble in water

Question 2

triglyceride structure

Answer 2

glycerol and fatty acidsg

Question 3

glycerol

Answer 3

3 carbon atoms, and 3 OH.

Question 4

fatty acid

Answer 4

carboxyl group attached to hydrocarbon tail-> ionises to h+ and coo

Question 5

saturated

Answer 5

no double bond

Question 6

unsatured

Answer 6

double bond

Question 7

more then one double bond?

Answer 7

changes shape, and making it more fluid

Question 8

ester bonds

Answer 8

condensation reaction of COOH and OH.
produces 3 fatty acids to bond.
h2o produced.
covalent bond=ester

Question 9

functions of triglycerides

Answer 9

energy source-broken down to release energy,
releases ATP.
hydrolyse ester, glycerol and acids, to break to CO2 and H2O.
insulation.
protection

Question 10

phospholipid structure

Answer 10

same as triglycerides, but one fatty acid replaced with phosphate group.
HYDROPHOBIC TAIL-not attract water.
HYDROPHILIC HEAD-attract water.

Question 11

Cholestrerol

Answer 11

small hydrophobic molecule.
regulates fludity of membrane
not made of glycerol or fatty acids.
can pass through cell membrane.