B.1.3 Carbohydrates - Disaccharides And Polysaccharides

Question 1

What are disaccharides?

Answer 1

Pairs of monomers

Question 2

What does glucose and glucose form

Answer 2

Maltose

Question 3

What does glucose and fructose form?

Answer 3

Sucrose

Question 4

What does glucose and galactose form?

Answer 4

Lactose

Question 5

What type of reaction is where water is removed?

Answer 5

Condensation reaction

Question 6

What type of bond is formed when monosaccharides join through a condensation reaction?

Answer 6

Glycosidic Bond

Question 7

What is hydrolysis?

Answer 7

When water is added to a disaccharide under suitable conditions, breaking the glycosidic bond

Question 8

In order, to test for non-reducing sugars, what do you need to do before you do the Benedict’s test?

Answer 8

Be hydrolysed into its monosaccharide components by hydrolysis

Question 9

How are polysaccharides formed?

Answer 9

Combining many monosaccharides molecules

Question 10

How are monosaccharides joined?

Answer 10

Glycosidic bonds (Condensation reaction)

Question 11

True or False : Polysaccharides are soluble

Answer 11

False (they are insoluble)