Lesson 3.1.2.1
3.1.2.1 Monosaccharides, disaccharides and glycosidic bonds Quiz: AQA Biology, Unit 1
20 questions
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Lesson 3.1.2.1, Monosaccharides, disaccharides and glycosidic bonds: 20 multiple choice questions for the AQA Biology (7402), Unit 1: Biological molecules, written with Revision Ninja.
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The 20 questions
-
Which monosaccharide is an isomer of glucose with a ketone group on carbon 2?
- Galactose
- Maltose
- Ribose
- Fructose
-
Which disaccharide is formed by the condensation of a glucose molecule and a fructose molecule?
- Lactose
- Maltose
- Sucrose
- Cellulose
-
Which disaccharide is made from glucose and galactose?
- Maltose
- Glycogen
- Sucrose
- Lactose
-
Which disaccharide is formed by the condensation of two glucose molecules?
- Sucrose
- Lactose
- Maltose
- Fructose
-
What type of bond joins two monosaccharides in a disaccharide?
- Phosphodiester bond
- Ester bond
- Glycosidic bond
- Peptide bond
-
Which term describes the simplest single sugar unit that cannot be hydrolysed further?
- Disaccharide
- Monosaccharide
- Triglyceride
- Polysaccharide
-
Which of these is a monosaccharide?
- Sucrose
- Galactose
- Lactose
- Maltose
-
How many carbon atoms does a hexose monosaccharide such as glucose contain?
- 6
- 12
- 3
- 5
-
Where is the hydroxyl group located on carbon 1 in alpha-glucose?
- Inside the ring
- Above the ring
- Below the ring
- Opposite carbon 6
-
Which two monosaccharides are produced by the complete hydrolysis of lactose?
- Glucose and fructose
- Glucose and galactose
- Glucose and glucose
- Galactose and fructose
-
A solution contains 360 g of glucose, which is condensed completely into maltose. What mass of maltose is formed? (Glucose 180, maltose 342)
- 342 g
- 324 g
- 378 g
- 360 g
-
Which monosaccharides condense to form a molecule of sucrose?
- Glucose and galactose
- Glucose and fructose
- Glucose and glucose
- Galactose and fructose
-
Hydrolysing one mole of sucrose yields one mole of glucose and one mole of what?
- Galactose
- Fructose
- Maltose
- Ribose
-
How many moles of sucrose and water form when two moles of glucose and fructose condense?
- 2 sucrose, 4 water
- 4 moles each
- 2 moles each
- 1 mole each
-
Which disaccharide is formed by the condensation of two alpha-glucose molecules?
- Cellobiose
- Maltose
- Lactose
- Sucrose
-
What term describes glucose, galactose, and fructose having the same chemical formula but different structures?
- Polysaccharides
- Structural isomers
- Polypeptides
- Stereoisomers
-
What products are formed when sucrose is completely hydrolysed by heating with dilute hydrochloric acid?
- Two glucose molecules
- Glucose and galactose
- Glucose and fructose
- Two fructose molecules
-
How many carbon atoms are present in a single molecule of galactose?
- 5
- 12
- 3
- 6
-
Which of these is a pentose monosaccharide?
- Glucose
- Ribose
- Fructose
- Galactose
-
How many glycosidic bonds are present in a single molecule of a disaccharide?
- 1
- 0
- 2
- 3
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