lipids, nucleic acids and the origin of life

Question 1

what do we know about lipids ?

Answer 1

they are water insoluble compounds (hydrophobic)
are important in long-term energy storage
contain twice as much energy as a polysaccharide
consist mainly of carbon and hydrogen atoms linked by nonpolar covalent bonds

Question 2

do carbohydrates or lipids release more energy when broken down ?

Answer 2

lipids

Question 3

what are the three types of lipids ?

Answer 3

storage fats
phospholipids
sterols

Question 4

what is a storage fat ?

Answer 4

is a large lipid made from two kinds of smaller molecules:
glycerol and fatty acids

Question 5

a fat contains …

Answer 5

one glycerol linked to three fatty acids

Question 6

do unsaturated fatty acids have double bonds ?

Answer 6

yes

Question 7

unsaturated fats are referred to as …

Answer 7

oils

Question 8

what are hydrogenated vegetable oils ?

Answer 8

are unsaturated fats that have been that have been converted into saturated fats by adding hydrogen
partial hydrogenation creates trans-fats, which are associated with health risks