QUESTIONS

(a) The diagram shows the formula of a molecule of an organic compound

CnH2nOn

(i) To which group of organic compounds does this molecule belong?

(1)

(b) The statements in the table below refer to three polysaccharide molecules. Fill a Y or an N in the boxes to indicate whether the statements are correct or not.

Statement  Starch  Glycogen 
Polymer of glucose  
Glycosidic bonds present  
Unbranched chains only  
Energy store in animal cells  

(2)

(c) (i) Name the reagent used to test for the presence of reducing sugars in food.

(1)

(ii)  Name a sugar that would not give a positive test with this reagent.

(1)

 

back

home