biology class

Question 1

what is a sugars classification of being reduced or non reducing dependant on

Answer 1

Sugars can be classified as reducing or non-reducing; this classification is dependent on their ability to donate electrons

Question 2

what can reducing sugars do

Answer 2

Reducing sugars can donate electrons (the carbonyl group becomes oxidised), the sugars become the reducing agent

Question 3

what are examples of reducing sugars

Answer 3

glucose, fructose, maltose

Question 4

how can reducing sugars be detected

Answer 4

Thus reducing sugars can be detected using the Benedict’s test as they reduce the soluble copper sulphate to insoluble brick-red copper oxide

Question 5

what cant reducing sugars do

Answer 5

Non-reducing sugars cannot donate electrons, therefore they cannot be oxidised

Question 6

how do you detect non reducing sugars

Answer 6

to be detected non-reducing sugars must first be hydrolysed to break the disaccharide into its two monosaccharides before a Benedict’s test can be carried out
Example: sucrose

Question 7

what does it mean if a chain is saturated

Answer 7

the hydrocarbons have attached to all possible bonds therefore do not require double bonds,

Question 8

what does it mean if a chain is unsaturated

Answer 8

it hasn’t got the maximum no. of carbons so makes up for it with extra carbon bonds