CARBOHYDRATES

Question 1

Monomers are the smaller units from which larger molecules are made
Polymers are molecules made from a large number of monomers joined together in a chain

Answer 1

Monomers are the smaller units from which larger molecules are made
Polymers are molecules made from a large number of monomers joined together in a chain

Answer 2

Polymers are molecules made from a large number of monomers joined together in a chain

Answer 3

Carbohydrates, proteins, lipids and nucleic acids contain the elements carbon (C) and hydrogen (H) making them organic compounds

Answer 4

All molecules in this group contain C, H and O

Answer 5

Trioses (3C) eg. glyceraldehyde
Pentoses (5C) eg. ribose
Hexoses (6C) eg. glucose

Answer 6

maltose 1,4
sucrose 1,2
cellulose 1,4
amylose 1,4
amylopectin 1,4 and 1,6

Answer 7

Sucrose is a non-reducing sugar which gives a negative result in a Benedict’s test. When sucrose is heated with hydrochloric acid this provides the water that hydrolyses the glycosidic bond resulting in two monosaccharides that will produce a positive Benedict’s test

Answer 8

All chromatography techniques use two phases:
The mobile phase
The stationary phase

Answer 9

The components in the mixture separate as the mobile phase travels over the stationary phase
Differences in the solubility of each component in the mobile phase which affects how far each component can travel
Those components with higher solubility will travel further than the others
This is because they spend more time in the mobile phase and are thus carried further up the paper than the less soluble components