Biomolecules Flashcards
3.1/2/3/4/5/6/7/8/9/10/11
1
Q
What is a hydrogen bond
A
2
Q
What are biological molecules
A
carbohydrates, lipids, proteins and nucleic acids
3
Q
Oxygen is more electronegative, what does this mean?
A
4
Q
Why is water polar
A
- oxygen is electronegative = slight negative
- makes hydrogen positive
- causes attraction
5
Q
A
6
Q
What is cohesion and adhesion
A
co = H2O molcules bind together
ad = H2O bind to surfaces
7
Q
A
8
Q
why water has high latent heat of vaporisation
A
lots o f energy to change water from liquid to gas
9
Q
why water has high specific heat capacity
A
- water resists change in temp as it takes lots of energu to heat and cool
- moderates to temp on earth
10
Q
why water has solvent properties
A
good solvent for polar molecules and ionic compounds to dissociate into component ions
