B3 biological molecules Flashcards
1
Q
Chemical elements of carbohydrates
A
CHO
2
Q
Chemical elements of fats and lipids
A
CHO
3
Q
Chemical elements of protein
A
CHON
4
Q
Chemical elements of reducing sugars
A
CHO
5
Q
Test for starch
A
Iodine
+ blue-black
- brown
6
Q
Test for reducing sugars
A
Benedict’s solution + warm in water bath
+ high conc. red
+ low conc. green
- blue
7
Q
Test for proteins
A
Biuret test
+ purple
- blue
8
Q
Test for fats and lipids
A
Ethanol and water
+ cloudy emulsion
- colourless
9
Q
Proteins are made from
A
Amino acids
10
Q
Starch and glycogen are made from
A
Glucose
11
Q
Fats and oils are made from
A
Fatty acids and glycerol
12
Q
Polymers
A
Large molecules made from small similar molecules (subunits)
13
Q
Why water is important as a solvent
A
Dissolved substances can be easily transported around organisms
