Topic 2 - Biological Molecules

Question 1

what molecules do carbohydrates and lipids contain?

Answer 1

carbon, hydrogen and oxygen

Question 2

what are complex carbohydrates (e.g. starch and glycogen) made up of?

Answer 2

many smaller units (e.g glucose and maltose) joined together in a long chain

Question 3

what are proteins made up of?

Answer 3

long chains of amino acids

Question 4

what molecules do proteins contain?

Answer 4

carbon, nitrogen, hydrogen and oxygen

Question 5

what are lipids made up of?

Answer 5

fatty acids and glycerol

Question 6

how do you make a food sample?

Answer 6

1. break up a piece of food using a pestle and mortar
2. transfer this to a beaker and add distilled water
3. stir the mixture to dissolve the food
4. filter the solution