Carbohydrates - Monosaccharides

Question 1

Give 3 example of monomers

Answer 1

Monosaccharides

Amino acids

Nucleotide

Question 2

What’s a pair of monosaccharides

Answer 2

Disaccharide

Question 3

What’s a single monomer called

Answer 3

A monosaccharide

Question 4

What’s it called when a number of monosaccharides are combined together

Answer 4

Polysaccharides

Question 5

What’s the general formula or monosaccharides

Answer 5

(CH2O)n

n=3-7

Question 6

What’s the structure like in alpha glucose

Answer 6

H O H

HO. OH

forms like a hexagon

(OH AT THE BOTTOM)

Question 7

What’s the structure in beta glucose

Answer 7

H O OH

HO. H

forms like a hexagon

(OH AT THE TOP)

Bonds are covalent

PRACTICE DRAWING IT

Question 8

How to test for reducing sugars

Answer 8

Benedicts rest

Add 2cm of the good sample to be tested to a test tube. ( if it’s not already in liquid form, first grind up in water )

Add an equal volume of benedicts reagent

Heat the mixture in a gently boiling water bath for 5 mins

If positive solution turns brick red

Question 9

Large molecules often contain carbon. Explain why this is

Answer 9

Carbon atoms readily link to one another to form a chain