Chapter 8

Question 1

lipids are structurally

Answer 1

have the same feature of insolubility in water due to their hydrophobic and amphipathic character

Question 2

lipids are functionally (4)

Answer 2

energy storage, component of membranes, enzyme cofactors,signalling

Question 3

lipids have a low oxidation state

Answer 3

they have more electrons to donate than carbs storing twice as much energy

Question 4

lipids have a low hydration state

Answer 4

they are more hydrophobic with limited interaction to water providing a dehydrated energy storage form

Question 5

fatty acid composition consists of

Answer 5

an even number of C’s (12-24)

Question 6

double bonds in fatty acids:

Answer 6

saturated(no double bonds)

unsaturated (1 double bond)

Question 7

the number of carbons in a fatty acids means

Answer 7

the number of double bonds and the position of double bond by delta^n

Question 8

the melting temperature of a fatty acid reflects

Answer 8

the length and degree of saturation of the hydrocarbon tails

Question 9

triacylglycerols are

Answer 9

the storage lipids in animals and plants

Question 10

saponification

Answer 10

treatment of animal fat with a strong base will break the ester linkages of triacylglycerols

Question 11

waxes are

Answer 11

non polar esters of long chain fatty acids and long chain alcohols

Question 12

membrane bikayers of lipids

Answer 12

define cells and regulate the composition of the intracellular environment