AO1 WJEC Carbohydrates Quiz

What is an isomer?

• A molecule made of only one element

• A molecule that dissolves in water

• Molecules with the same molecular formula but different structures

• A type of carbohydrate

What is the general term for a single sugar unit?

• Disaccharide

• Monosaccharide

• Polysaccharide

• Glycosidic

How many carbon atoms does a triose sugar have?

• 4

• 3

• 5

• 6

How many carbon atoms does a pentose sugar have?

• 4

• 3

• 6

• 5

How many carbon atoms does a hexose sugar have?

• 5

• 7

• 6

• 4

What is the general formula for a monosaccharide?

• CnH2nOn

• CH4

• CnH2On2

• CnHnOn

Which of the following molecules contain ribose?

• DNA and ATP

• RNA and DNA

• RNA and ATP

• Glucose and Fructose

Which molecule contains deoxyribose?

• RNA

• DNA

• ATP

• Glycogen

What is the function of triose and hexose sugars?

• Structural support

• Long-term storage

• Energy supply and metabolic intermediates

• Cell signaling

Why are glucose, galactose and fructose described as isomers of each other?

• They have the same taste

• They have the same shape

• They have the same chemical formula but different structures

• They form the same disaccharides