Carbohydrates 2 : Polysaccharides As Energy Stores Flashcards
What are homo polysaccharides
Polysaccharides made up of only one type of monosaccharide
What are heteropolysaccharides?
Polysaccharides made up of more than one monomer
Where do plants store energy ?
As starch In chloroplasts or starch grains
Where fo animals store energy
As glycogen in muscle cells or the liver
Why are polysaccharides good stores of energy?
They are compact
They hold glucose molecules in chains so they can be snipped off
Some chains are branched and sone aren’t. Branched chains tend to be more compact but also offer chance for more glucose
What does polysaccharides being less soluble than monosaccharides mean?
If they weren’t more glucose molecules would dissolve into the cytoplasm decreasing the water potential of the cell which would make water diffuse into the cell
Monosaccharides of amilose
Alpha glucose
Monosaccharides of amylopectin
Alpha glucose
Monomers of glycogen
Alpha glucose
What polysaccharides are branced
Glycogen and amylopectin are but amylose isn’t
What polysaccharides are spiral shaped
Amylose and amylopectin are but glycogen isn’t
What are less soluble in water polysaccharides or monosaccharides?
Polysaccharides are less soluble in water
Why are polysaccharides less soluble in water?
Because amylose sometimes forms a double helix presenting a hydrophobic external surface
