Topic 1 AQA A Level Biological Molecules

Front

What is a polymer?

Back

Molecules made from a large number of monomers joined together.

Front

What is a monosaccharide?

Back

The smaller units from which larger carbohydrates are made.

Front

What is a disaccharide?

Back

Formed by the condensation of two monosaccharides held together by a glycosidic bond.

Front

What is a polysaccharide?

Back

Formed by the condensation of many glucose units held by glycosidic bonds.

Front

What is cellulose?

Back

Polysaccharide in plant cell walls formed by the condensation of β-glucose.

Front

What is glycogen?

Back

Polysaccharide in animals formed by the condensation of α-glucose.

Front

What is starch?

Back

Polysaccharide in plants formed by the condensation of α-glucose, contains two polymers - amylose and amylopectin.

Front

What is a glycosidic bond?

Back

C–O–C link between two sugar molecules formed by a condensation reaction.

Front

What is amylose?

Back

Polysaccharide in starch made of α-glucose joined by 1,4-glycosidic bonds.

Front

What is amylopectin?

Back

Polysaccharide in starch made of α-glucose joined by 1,4 and 1,6-glycosidic bonds.