energy And Diet Flashcards
how are di/polysaccharides formed
monosaccharides join by condensation reaction to form disaccharide releasing a molecule of water. a glycosidic bond is formed.
Two examples of monosaccharide
- glucose (6 carbon atoms )
- ribose (5 C atoms ) - component od DNA&RNA
3 disaccharides and their components
- glucose + glucose -> maltose
- glucose + galactose-> lactose
-glucose+ fructose -> sucrose
Two examples of polysaccharides
- glycogen ( in animals )
- starch ( energy storage in plants )
Suitable for storage due to its compact nature and low solubility in water
Relate glycogen to its function
numerous side branches —> easily hydrolysed—> easy access to stored energy
Relate starch to its function
amylose = 1,4 bonds and unbranched so lots can be found in small spaces , compact
amylopectin = 1,6 bonds—> doible bonds in chain causes kinks—> kinks allow it to be hydrolysed quickly to release energy
How is a triglyceride formed
One glycerol molecule forms 3 ester bonds with three fatty acids through condensation reaction