bio molecules Flashcards
1
Q
starch
A
energy storage molecule in plants
- made of 2 polysaccharides of alpha-glucose (amylose + amylopectin)
amylose
- joined by 1-4 glyc bonds
- unbranched
- coiled structure - compact (good 4 storage)
amylopectin
-joined by 1-4 and 1-6 glyc bonds
- branched
- high SA (for enzymes to act on)
- large
- insoluble
- compact
- branched
2
Q
glycogen
A
energy storage molecule in animals
- polysaccharide of alpha-glucose
- joined by 1-4 and 1-6 glyc bonds
- highly branched
- compact
- large
- insoluble
3
Q
cellulose
A
major component of the cell wall in plants
- polysaccharide of beta-glucose joined by 1-4 glyc bonds
long, unbranched chains held in parallel lines by H bonds to form microfibrils - provides structural strength
jdjdusbwhuf
4
Q
lipids
A
polymers made from glycerol and FAs
- cell membranes
- source of energy
- waterproofing
- insulation
- protection
5
Q
triglycerides
A
1 glycerol w 3 FAs attached
- large amount of energy stored in hydrocarbon tails of FAs
- large + hydrophobic
djdjdjkdjf
6
Q
phospholipids
A
7
Q
polypeptides + proteins
A
- structure determined by position of AAs
- primary structure is made up of seq of AAs in a PP chain
- secondary structure is formed by H bonding between AAs
- tertiary structure is formed by interactions (H/ionic bonds/disulphide bridges) between R groups
- creates specific shapes (AS in enzymes)
- quarternary structure contains more than 1 PP chain joined together to make a protein
