Biological molecules. Flashcards
1
Q
What is a condensation reaction?
A
- Two molecules join together with the removal of water.
2
Q
Describe how cellulose is formed
A
Condensation polymerisation of B-glucose molecules.
3
Q
A
4
Q
What is a hydrolysis reaction?
A
- Two molecules being split apart by the addition of water.
5
Q
What elements are found in carbohydrates?
A
C, H, O
6
Q
What elements are found in proteins?
A
C, H, O, N, S
7
Q
What elements are found in nucleic acids/
A
C, H, O, N, P
8
Q
A
9
Q
State biologically important properties of water.
A
- High surface tension
- Good metabolite / solvent
- High latent heat of vaporisation
- High specific heat capacity
- Cohesion
- Density
10
Q
What are the 4 difference disaccharides made of?
A
- Maltose: a-glucose + a-glucose
- Sucrose: a-glucose + b-glucose
- Lactose: B-galactose + a-glucose
- Cellobiose: B-glucose + B-glucose.
11
Q
What bonds glucose molecules together?
A
Glycosidic bonds.
12
Q
What bonds hold proteins together?
A
Peptide bonds
13
Q
What bonds hold lipids together?
A
Ester bonds.
