Chemistry for Biologists

Carbohydrates

1. Starch is a polymer made from the following monomer:
β-glucose
α-fructose
α-galactose
α-glucose
2. The products of hydrolysis of lactose are:
α-glucose and α-fructose
α-glucose and α-galactose
α-galactose and α-ribose
α-fructose and α-galactose
3. The type of bond that forms when a disaccharide is formed from two monosaccharides is called:
a carbohydrate bond
a glycosidic bond
a peptide bond
an ester bond
4. The type of reaction that occurs when a disaccharide is formed from two monosaccharides is
hydrolysis
condensation
addition
reduction
5. Which two monosaccharides combine to form sucrose?
α-glucose and α-fructose
α-fructose and α-ribose
α-glucose and β-glucose
α-galactose and α-fructose
6. Which is the most important carbohydrate fuel in human cells?
ribose
fructose
galactose
glucose
7. Aldoses are reducing sugars because in their non-cyclic form they contain:
a ketone group
an ester group
an aldehyde group
an hydroxyl group
8. Saccharides contain the following combination of elements:
carbon, oxygen and hydrogen
carbon, nitrogen and hydrogen
carbon, hydrogen and phosphorus
carbon and hydrogen

 

RSC