Biological Molecules Flashcards
1
Q
what are the chemical elements present in proteins
A
carbs, hydrogen, oxygen; nitrate and sometimes sulphur
2
Q
what are the chemical elements found in carbohydrates
A
carbon, hydrogen and oxygen
3
Q
what are the chemical elements found in lipids (fats and oils)
A
carbon, hydrogen and oxygen
4
Q
what are proteins made up of
A
20 amino acids
5
Q
how can you tell if glucose is present
A
if you add Benedict’s solution and it turns brick red
6
Q
how can you tell if starch is present
A
if you add iodine solution and it turns blue black
7
Q
how can if a lipid is present
A
if you add ethanol an there’s a white cloudy layer on top (emulsion)
8
Q
A
9
Q
how to tell if a protein is present
A
if you add buiret solution and it turns lilac
