monosaccharides Flashcards
what are the 2 classifications of sugars
reducing or non reducing
what is special about reducing sugars electrons
they can donate electrons so the carboxyl group becomes oxidised
why can reducing sugars be detected by the benedict’s test
because they reduce the soluble copper sulphate into insoluble brick red copper oxide
what are some examples of reducing sugars
glucose, fructose and galactose
what is an example of a non reducing sugar
sucrose
what is the loss of electrons
oxidation
what is the gain of electrons
reduction
what is the formula for glucose
C6H12O6
what is the main function of glucose
energy source
why is glucose known as an isomer
because it has both alpha and beta forms
what is the structure of alpha glucose
in a ring of 5 carbons and 1 oxygen, the hydrogen on carbon 1 is above the carbon in the plain of the ring while the hydroxyl group is below.
C2 : H above , OH below
C3 :H below OH above
C4 :H above OH below
C5 : H below CH2OH above
what is the structure of beta glucose
Opposite to alpha!
in a ring of 5 carbons and 1 oxygen, the hydrogen on carbon 1 is below the carbon in the plain of the ring while the hydroxyl group is above .
C2 : H above , OH below
C3 :H below OH above
C4 :H above OH below
C5 : H below CH2OH above
what type of glucose is starch and glycogen
alpha
what type of glucose is cellulose
beta
