monosaccharides

Question 1

Glucose is a monosaccharide. Two glucose molecules join together to form a disaccharide.

(i) Name the products of this reaction.

___________________________________________________________________

(2)

(ii) Name the type of reaction that joins the glucose molecules together.

Answer 1

Maltose;

2. Water;

Accept H2O

2

(ii) Condensation;

DONT FORGET WATER

Question 2

Explain one advantage of storing starch rather than glucose in potato cells.

Answer 2

Insoluble;
Therefore will not “wash” out of cell / affect water
potential / affect osmosis;
OR
Molecule coiled / branched;
Therefore large amount stored in small space / compact
OR
Does not affect water potential;
So no effect on entry of water (into cell);