Carbohydrates

Question 1

Monosaccharide

Answer 1

Single sugar unit e.g. Glucose

Question 2

Disaccharide

Answer 2

2 monosaccharides bonded by s glycosidic bond

Lactose

Question 3

Polysaccharide

Answer 3

3+ monosaccharides bonded by glycosidic bonds

Cellulose

Question 4

Glucose isomerase

Answer 4

Alpha - Hydroxyl below c1

Beta - hydroxyl above c1

Question 5

Glucose properties

Answer 5

Polar

Soluble

Question 6

Condensation of 2 alpha glucose

Answer 6

When 2 alpha glucose molecules bond, their hydroxyl groups react forming a glycosidic bond and water

Question 7

Starch

Answer 7

Compact because it’s made from helix of glucose chain
Insoluble
Made from amylose

Question 8

Glycogen

Answer 8

Insoluble
Branched
Compact
Amylopectin

Question 9

Hydrolysis

Answer 9

Reverse of condensation, breaks the larger molecules up into smaller ones

Question 10

Cellulose

Answer 10

Made of b glucose
One b glucose has to be flipped so the hydroxyl groups can react

Straight chain molecule

Question 11

Cellulose fibres

Answer 11

Cellulose molecules make hydrogen bonds forming microfibrils with join to make macrofibrils which then combine to make fibres