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6. When two monosaccharides join to make a disaccharide, which type of reaction occurs?
- A condensation reaction
- A hydrolysis reaction
7. Which two of these disaccharides are examples of reducing sugars?
- maltose, lactose
- maltose, sucrose
- sucrose, sucrase
8. In alpha glucose, the hydroxyl group (OH) is _____ the plane of the molecule
9. Which reaction occurs when a disaccharide is broken into two monosaccharides?
- A hydrolysis reaction
- A condensation reaction
10. What is the main function of monosaccharides?
- To provide a store of energy (i.e. starch)
- To provide energy (i.e. glucose)
- To provide cell structure (i.e. cellulose)
11. Give two properties of a disaccharide
- strong, insoluble
- sweet, soluble
- sweet, insoluble
12. Which of these is NOT a characteristic of monosaccharides?
- Water-solubility
- Insolubility in non-polar substances
- Solubility in non-polar substances
- They taste sweet
13. What is a carbohydrate?
- A group of molecules containing carbon, hydrogen and oxygen
- A compound containing glycosidic bonds between carbon atoms
- A compound made up of more than one carbon atom
14. In solution, hexose, pentose and triose sugars exist in what form?
- In a helix structure
- Straight chains
- Ring/cyclic
15. How does the structure of starch (spiral, compact) aid its function?
- It is insoluble, has no osmotic effect and you can store more of it
- It lines up to add strength to the molecule
16. Isomers are …?
- Molecules with the same formula, but whose atoms are arranged differently in space
- Molecules with a different formula, but whose atoms are arranged in the same way in space
- Atoms of the same element with different numbers of neutrons and different masses
17. What is the product of beta galactose + alpha glucose?
- Cellobiose
- Lactose
- Maltose
18. What is the product of beta glucose + beta glucose?
- Cellobiose
- Lactose
- Ribose