Chemistry for Biologists

Carbohydrates

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

 

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